{"title":"2015-2021 Subaru STI Turbo \u0026 Boost","description":null,"products":[{"product_id":"tomei-arms-m8265-turbocharger-450hp-2002-2007-subaru-wrx-2004-2021-subaru-sti","title":"Tomei ARMS MX8265 Turbo - Subaru Models (Inc. 2002-2007 Subaru WRX \/ 2004-2021 STI \/ 2004-2008 Forester)","description":"\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003eTomei ARMS M8265 Turbocharger (450hp)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis turbine kit from Tomei boasts a maximum 450ps remain genuine layout, which takes you to reach and stretch to the peak power from 4000rpm. It is a turbine that really shines more you step up the tuning, including internal engine modifications. Rated at 450hp. Improve your vehicle's performance by utilizing the Tomei ARMS M8265 Turbocharger. With a maximum rating of 450hp and genuine layout, this turbocharger allows you to reach peak power from 4000rpm. Whether you're making internal engine modifications or tuning, this turbocharger truly shines.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNOTE:\u003c\/strong\u003e This is a BOLT ON turbo.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eA silicone inlet hose is needed when using this turbo as the inlet is slightly larger than stock.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eIncludes\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eTurbo\u003c\/li\u003e\n\u003cli\u003eWater Lines\u003c\/li\u003e\n\u003cli\u003eOil Return Lines\u003c\/li\u003e\n\u003cli\u003eGaskets\u003c\/li\u003e\n\u003cli\u003eBolts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eCompressor Wheel: 52 Trim, 54.8mm Inlet Diameter, 76.2mm Exit Diameter\u003c\/li\u003e\n\u003cli\u003eTurbine Wheel: 77.1 Trim, 67.0mm Inlet Diameter, 58.8mm Exit Diameter.\u003c\/li\u003e\n\u003cli\u003eBearing Type: Journal Bearing\u003c\/li\u003e\n\u003cli\u003eFitment: OEM Upgrade\u003c\/li\u003e\n\u003cli\u003eInlet Size: Non OEM\u003c\/li\u003e\n\u003cli\u003eWastegate: Internal\u003c\/li\u003e\n\u003cli\u003eOil Line Included: Yes\u003c\/li\u003e\n\u003cli\u003ePorted Turbine Housing: No\u003c\/li\u003e\n\u003cli\u003eGaskets Included: Yes\u003c\/li\u003e\n\u003cli\u003eRated Horsepower: 380hp\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Tomei","offers":[{"title":"Default Title","offer_id":45765784699169,"sku":"TOMTB401A-SB01C","price":1580.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/products\/5161287bc88dd1cb96d8df4b8ce30b89.jpg?v=1697907320"},{"product_id":"blc-dom3-0xtr8cm-2-blouch-dominator-3-0xt-r-8cm-2-turbo","title":"Blouch Dominator 3.0XT-R 8cm^2 Turbo - Subaru Models (inc. 2002-2007 WRX \/ 2004-2021 STI)","description":"Blouch Dominator 3.0XT-R 8cm^2 Turbo Subaru Models (inc. 2002-2007 WRX \/ 2004+ STI)\r\n\u003ch3 align=\"center\"\u003eBlouch Dominator 3.0XT-R 8cm2 Turbo Subaru Models (inc. 2002-2007 WRX \/ 2004+ STI)\u003c\/h3\u003e\r\n\r\n\u003chr\u003e\r\n\u003ch4\u003eSPECS:\u003c\/h4\u003e\r\n\r\n\u003cul\u003e\r\n\t\u003cli\u003ePart of Blouch's XT-R line of turbochargers\u003c\/li\u003e\r\n\t\u003cli\u003eBillet compressor wheel design optimize the aerodynamics of a turbo and increase compressor flow within the same inducer geometry\u003c\/li\u003e\r\n\t\u003cli\u003eDesigned with Garrett GT turbine and full ball-bearing technology\u003c\/li\u003e\r\n\t\u003cli\u003eAdjustable wastegate actuator\u003c\/li\u003e\r\n\t\u003cli\u003eWastegate actuator is pre-calibrated to 15 psi\u003c\/li\u003e\r\n\t\u003cli\u003e8cm2 housing\u003c\/li\u003e\r\n\t\u003cli\u003eCapable of making up to 550 HP with supporting modifications\u003c\/li\u003e\r\n\t\u003cli\u003eComplete bolt-on package\u003c\/li\u003e\r\n\t\u003cli\u003eIncludes stainless steel oil feed line\u003c\/li\u003e\r\n\t\u003cli\u003eIncludes oil drain tube and coolant lines\u003c\/li\u003e\r\n\t\u003cli\u003eIncludes new gaskets and hardware\u003c\/li\u003e\r\n\t\u003cli\u003eBlack compressor cover option\u003c\/li\u003e\r\n\t\u003cli\u003eCeramic coated exhaust housing\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003cp\u003e \u003c\/p\u003e\r\n\r\n\u003ch4 align=\"center\"\u003eNOT YOUR AVERAGE HAIRDRYER\u003c\/h4\u003e\r\n\r\n\u003cp\u003eThis is the Blouch Dominator 3.0 XT-R 8cm2 Turbocharger. This is a ball-bearing turbocharger that is capable of supporting up to about 550 horsepower with supporting modifications, and Blouch does an excellent job of providing you with a complete bolt-on package provided with pre-installed oil drain and coolant lines with new gaskets included so that you can start making some serious power. \u003c\/p\u003e","brand":"Blouch","offers":[{"title":"Default Title","offer_id":45766089769249,"sku":"BLCDOM3.0XTR8CM2","price":2035.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/products\/888bb3e3d9d39ef9fda50dd572acacf4_6cb687b5-837c-45e9-8f0d-2798b03a58f3.jpg?v=1697909935"},{"product_id":"td06h-20gxt8cm-2-blouch-20g-xt-8cm-2-turbo","title":"Blouch 20G-XT 8cm^2 Turbo - Subaru Models (inc. 2002-2007 WRX \/ 2004-2021 STI)","description":"\u003cp\u003eHIGHLIGHTS:\u003c\/p\u003e\r\n\r\n\u003cul\u003e\r\n\t\u003cli\u003eBillet compressor wheel\u003c\/li\u003e\r\n\t\u003cli\u003eRated to 470 HP with supporting modifications\u003c\/li\u003e\r\n\t\u003cli\u003eFast-spooling\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003ch3 align=\"center\"\u003eBlouch TD06H-20GXT Billet 8cm2 Turbocharger 2002-2007 Subaru WRX 2004+ Subaru STI\u003c\/h3\u003e\r\n\r\n\u003chr\u003e\r\n\u003ch4\u003eTD06H-20GXT Billet 8cm2 Specs:\u003c\/h4\u003e\r\n\r\n\u003cul\u003e\r\n\t\u003cli\u003eBlouch fully machined billet XT compressor wheel\u003c\/li\u003e\r\n\t\u003cli\u003eCustom high flow low inertia turbine wheel\u003c\/li\u003e\r\n\t\u003cli\u003eJournal-bearing type\u003c\/li\u003e\r\n\t\u003cli\u003eRated for 470hp\u003c\/li\u003e\r\n\t\u003cli\u003ePainted turbine housing\u003c\/li\u003e\r\n\t\u003cli\u003eIncludes new downpipe and up pipe gaskets\u003c\/li\u003e\r\n\t\u003cli\u003eComplete with coolant pipes and turbo oil drain tube installed\u003c\/li\u003e\r\n\t\u003cli\u003eNo modification to intake, exhaust, and oil and coolant connections to make this turbocharger direct bolt-on\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003cp\u003e \u003c\/p\u003e\r\n\r\n\u003ch4 align=\"center\"\u003eBlouch TD06H-20GXT Billet 8cm2 Turbo\u003c\/h4\u003e\r\n\r\n\u003cp\u003eThis turbo packs a powerful punch that is capable of supporting up to 470 HP with a proper tune and the right supporting modifications. This is plenty of power for a dedicated race car, rally car, and it is certainly enough power for a street car. The greatest benefit is that this turbocharger is a direct bolt-on upgrade over your OEM turbo that needs no further modifications to your intake or exhaust system for the fitment. \u003c\/p\u003e\r\n\r\n\u003cp\u003eIt will come right out of the box pre-assembled with oil and coolant lines and will include new gaskets making this turbo ready for the installation. \u003c\/p\u003e\r\n\r\n\u003cp\u003e \u003c\/p\u003e","brand":"Blouch","offers":[{"title":"Default Title","offer_id":45766096879905,"sku":"BLCTD06H-20GXT8CM^2","price":1535.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/products\/96622b070ed084ec7fc1268e260173ab.jpg?v=1697909980"},{"product_id":"td06h-20gxt-r-blouch-20gxt-r-10cm-2-turbo","title":"Blouch 20GXT-R 10cm^2 Turbo - Subaru Models (inc. 2002-2007 WRX \/ 2004-2021 STI)","description":"A GREAT DROP-IN REPLACEMENT THAT CAN SUPPORT UP TO 440 HP\r\n\u003ch3 align=\"center\"\u003eBlouch 20GXT-R 10cm2 Turbocharger\u003c\/h3\u003e\r\n\r\n\u003chr\u003e\r\n\u003ch4\u003eSPECS:\u003c\/h4\u003e\r\n\r\n\u003cul\u003e\r\n\t\u003cli\u003e47 lb\/min flow rate\u003c\/li\u003e\r\n\t\u003cli\u003eBlouch 68mm fully machined billet XT compressor wheel\u003c\/li\u003e\r\n\t\u003cli\u003eCustom high flow low inertia 56.5mm turbine wheel\u003c\/li\u003e\r\n\t\u003cli\u003eCustom low-friction, low-inertia ceramic ball-bearing CHRA\u003c\/li\u003e\r\n\t\u003cli\u003eRated for 440hp\u003c\/li\u003e\r\n\t\u003cli\u003ePainted turbine housing\u003c\/li\u003e\r\n\t\u003cli\u003eIncludes new downpipe and up pipe gaskets\u003c\/li\u003e\r\n\t\u003cli\u003eComplete with coolant pipes and turbo oil drain tube installed\u003c\/li\u003e\r\n\t\u003cli\u003eNo modification to intake, exhaust, and oil and coolant connections to make this turbocharger direct bolt-on\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003cp\u003e \u003c\/p\u003e\r\n\r\n\u003ch4 align=\"center\"\u003eA GREAT DROP-IN REPLACEMENT THAT CAN SUPPORT UP TO 440 HP\u003c\/h4\u003e\r\n\r\n\u003cp\u003eThis is the Blouch Blouch Performance 20G-XTR with the 10cm2 exhaust housing. This is a ball-bearing turbocharger that is capable of supporting up to about 440 horsepower with supporting modifications, and Blouch does an excellent job of providing you with a complete bolt-on package provided with pre-installed oil drain and coolant lines with new gaskets included so that you can start making some serious power. \u003c\/p\u003e","brand":"Blouch","offers":[{"title":"Default Title","offer_id":45766090359073,"sku":"BLCTD06H-20GXT-R","price":1755.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/products\/cf0b9d4c1bf5ca2707427a5ef859cd10.jpg?v=1697910358"},{"product_id":"090231-grimmspeed-front-mount-intercooler-pipe-kit-red","title":"GrimmSpeed Front Mount Intercooler Pipe Kit Red - 2015-2021 Subaru STI","description":"GrimmSpeed Intercooler WRX Pipe Kit Red 2015+ STI\r\nGrimmSpeed Intercooler WRX Pipe Kit Red 2015+ STI","brand":"GrimmSpeed","offers":[{"title":"Default Title","offer_id":45766237454625,"sku":"grmGRM090231","price":699.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/products\/e708b12876c78f396f6481be67d006c6.jpg?v=1697911096"},{"product_id":"sub-14411aa700-subaru-oem-ihi-vf48-turbocharger","title":"Subaru OEM IHI VF48 Turbocharger - 2015-2021 Subaru STI","description":"The IHI V48 Turbocharger is available for those of you who need a direct replacement for the Subaru STI.\r\n\u003ch3\u003eSubaru OEM IHI VF48 Turbocharger\u003c\/h3\u003e\r\n\r\n\u003chr\u003e\r\n\u003ch3\u003eSpecs:\u003c\/h3\u003e\r\n\r\n\u003cul\u003e\r\n\t\u003cli\u003eThis is the factory turbocharger included in the Subaru STI from 2008-2019\u003c\/li\u003e\r\n\t\u003cli\u003eMakes for an excellent upgrade for earlier models\u003c\/li\u003e\r\n\t\u003cli\u003eComes assembled with the wastegate actuator, as well as the oil and coolant lines\u003c\/li\u003e\r\n\t\u003cli\u003eCapable of supporting up to 350 WHP with supporting modifications\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003cp\u003e \u003c\/p\u003e\r\n\r\n\u003ch4\u003eREPLACE OR UPGRADE TO THE POPULAR SUBARU IHI VF48\u003c\/h4\u003e\r\n\r\n\u003cp\u003eThe VF48 turbocharger is the factory turbocharger for the 2008-2019 STI models and is available for those of you who either need a direct replacement or for those of you who want to perform an upgrade using genuine Subaru components. The VF48 is capable of supporting up to 350 WHP with supporting modifications and is a direct drop-in installation. \u003c\/p\u003e\r\n\r\n\u003cp\u003eThis turbocharger will come assembled with a wastegate actuator, as well as the oil and coolant lines. It is highly recommended that you purchase a new Subaru banjo bolt and screen (not included)when installing a new turbocharger. \u003c\/p\u003e","brand":"Subaru OEM","offers":[{"title":"Default Title","offer_id":45766708166945,"sku":"SUB14411AA700","price":2404.61,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/products\/f7729db6dc9c46e03df296be00456ded.jpg?v=1697912812"},{"product_id":"tomei-arms-mx7960-turbocharger-400hp-2015-2021-subaru-sti","title":"Tomei ARMS Turbo MX7960 Turbo - Subaru Models (Inc. 2002-2007 Subaru WRX \/ 2004-2021 STI \/ 2004-2008 Forester)","description":"\u003cp\u003eGive your 2015-2021 Subaru STI some more POWER at a mid to high speed range with a turbocharger rated at 400HP! \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHighlights:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThis is a BOLT ON Turbo. No major modifications required.\u003c\/li\u003e\n\u003cli\u003eCompressor Wheel: 60 Trim, 52.6mm Inlet Diameter, 68.0mm Exit Diameter.\u003c\/li\u003e\n\u003cli\u003eTurbine Wheel: 78.4 Trim, 61.0mm Inlet Diameter, 54mm Exit Diameter.\u003c\/li\u003e\n\u003cli\u003eBearing Type: Journal Bearing\u003c\/li\u003e\n\u003cli\u003eFitment: OEM Upgrade\u003c\/li\u003e\n\u003cli\u003eInlet Size: OEM\u003c\/li\u003e\n\u003cli\u003eWastegate: Internal\u003c\/li\u003e\n\u003cli\u003eOil Line Included: Yes\u003c\/li\u003e\n\u003cli\u003ePorted Turbine Housing: No\u003c\/li\u003e\n\u003cli\u003eGaskets Included: Yes\u003c\/li\u003e\n\u003cli\u003eRated Horsepower: 400hp\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eGo Big or Go Home in Your 2015-2020 Subaru STI\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThis turbine kit from Tomei retains the low speed power range, with that extra punch at mid to high speed range. This is turbo has the balanced transient characteristics to produce peak power to suit those who want the best of both worlds.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eOutstanding Build Quality\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe newly designed Billet Compressor Wheel offers significant improvement over traditional cast compressor wheels. Machined from aerospace grade materials, these highly durable lightweight compressor wheels feature thinner blades with a larger surface care for significantly improved airflow and turbo spool. A large capacity multi rate billet actuator is utilized, with a reinforced forged billet construction. Includes a total of 6 springs for fine boost adjustments. Up to 3 springs can be combined to find the perfect setup. Swivel type nipple allows for greater freedom when routing hoses.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2015-2021 Subaru STI\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Tomei","offers":[{"title":"Default Title","offer_id":45766705053985,"sku":"TOMTB401A-SB01B","price":1580.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/products\/d6376e30f95b33ed99d72b75c07d07eb.jpg?v=1697913032"},{"product_id":"blc-td05h-16gxtcoat-blouch-td05h-16gxt-7cm-2-ceramic-coated-turbo-billet-wheel","title":"Blouch TD05H-16GXT 7cm^2 Ceramic Coated Turbo Billet Wheel - Subaru Models (inc. 2002-2007 WRX \/ 2004-2021 STI)","description":"\u003ch4\u003eHIGHLIGHTS:\u003c\/h4\u003e\r\n\r\n\u003cul\u003e\r\n\t\u003cli\u003eRated to 410 HP\u003c\/li\u003e\r\n\t\u003cli\u003eBillet wheel\u003c\/li\u003e\r\n\t\u003cli\u003eBlack compressor housing with ceramic coated exhaust housing\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003ch3 align=\"center\"\u003eBlouch TD05H-16GXT 7cm2 Ceramic Coated Turbocharger w\/Billet Wheel 2002-2007 Subaru WRX 2004+ Subaru STI\u003c\/h3\u003e\r\n\r\n\u003chr\u003e\r\n\u003ch4\u003e TD05H-16GXT 7cm2 Specs:\u003c\/h4\u003e\r\n\r\n\u003cul\u003e\r\n\t\u003cli\u003eNew aero of the Blouch 41 lb\/min fully machined billet XT compressor in a TD05 compressor housing\u003c\/li\u003e\r\n\t\u003cli\u003e7cm2 nozzle area turbine housing\u003c\/li\u003e\r\n\t\u003cli\u003eThe standard wastegate actuator is calibrated at 18 psi\u003c\/li\u003e\r\n\t\u003cli\u003eRated at 410HP\u003c\/li\u003e\r\n\t\u003cli\u003eCeramic coated option promotes cooler temperatures to the turbocharger and engine bay\u003c\/li\u003e\r\n\t\u003cli\u003eIncludes new downpipe and up pipe gaskets\u003c\/li\u003e\r\n\t\u003cli\u003eComplete with coolant pipes and turbo oil drain tube installed\u003c\/li\u003e\r\n\t\u003cli\u003eNo modification to intake, exhaust, and oil and coolant connections to make this turbocharger direct bolt-on\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003cp\u003e \u003c\/p\u003e\r\n\r\n\u003ch4 align=\"center\"\u003eBlouch TD05H-16GXT 7cm2 Ceramic Coated w\/Billet Wheel\u003c\/h4\u003e\r\n\r\n\u003cp\u003eThis particular turbocharger makes for an excellent OEM upgrade as it is a direct bolt-on replacement with no modifications needed to your intake or exhaust system are needed to make this turbocharger work. \u003c\/p\u003e\r\n\r\n\u003cp\u003eDesigned with a billet compressor wheel, this turbocharger is capable of supporting power levels up to 410 HP with the right tune and supporting modifications. The Blouch TD05H-16GXT 7cm2 will come pre-installed with coolant pipes and an oil drain tube, along with the appropriate gaskets making this turbocharger ready to install right out of the box. \u003c\/p\u003e\r\n\r\n\u003cp\u003eNote that this particular turbocharger will come ceramic coated which helps promote cooler temperatures to the turbocharger, with a reduction in underhood temperatures as well. \u003c\/p\u003e","brand":"Blouch","offers":[{"title":"Default Title","offer_id":45764721967393,"sku":"BLCTD05H-16GXTCOAT","price":1204.06,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/products\/1cc0f4deda0531a1a18a1a5e67da7678.jpg?v=1697920287"},{"product_id":"cob-e1120g-cobb-tuning-td05h-20g-turbocharger","title":"COBB Tuning TD05H-20G Turbocharger - 2002-2014 Subaru WRX \/ 2004-2021 STI","description":"\u003ch4\u003e\u003cstrong\u003eThe Uppipe: The Restriction Between the Engine and the Turbo\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe Cobb Stainless Steel Uppipe for the 2002-2007 Subaru WRX\/STI replaces the restrictive factory unit between the exhaust manifold and the turbocharger. The factory uppipe contains a flex section that collapses over time and a catalytic converter that restricts exhaust flow before it reaches the turbine wheel. The Cobb uppipe removes both restrictions, improving exhaust gas flow to the turbine and reducing the heat buildup that the factory flex section traps.\u003c\/p\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/products\/37b5a891686f1d9402505565e302efd8_69f09f09-4926-483e-bb1d-66caf43ed60f.jpg?v=1697921264\" alt=\"COBB Tuning TD05H-20G Turbocharger - 2002-2014 Subaru WRX \/ 2004-2021 STI\" style=\"width:100%;max-width:100%;margin:20px 0;border-radius:4px;\"\u003e\n\n\u003ch4\u003e\u003cstrong\u003eBetter Flow to the Turbine Wheel\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eReducing restriction in the uppipe directly improves how quickly exhaust gas reaches the turbine wheel on the GD WRX\/STI. The turbine spins on exhaust energy — more energy arriving with less restriction means faster spool and better mid-range boost delivery. The Cobb uppipe also removes the pre-turbo catalyst that traps heat in the exhaust path before the turbocharger.\u003c\/p\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/products\/316f803f0e94e39803e6aba0d5951195_daefaaa1-854e-4d8b-88fd-023bc65817e6.jpg?v=1697921264\" alt=\"COBB Tuning TD05H-20G Turbocharger - 2002-2014 Subaru WRX \/ 2004-2021 STI\" style=\"float:right;max-width:47%;margin:0 0 16px 16px;border-radius:4px;\"\u003e\n\n\u003ch4\u003e\u003cstrong\u003eBolt-In at Factory Manifold and Turbo Flanges\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe Cobb uppipe bolts to the factory exhaust manifold and turbocharger flanges on the GD WRX\/STI with no modification to the chassis or engine. The factory O2 sensor location is retained for ECU compatibility. An Accessport tune is required after installation.\u003c\/p\u003e\n\n\u003cdiv style=\"clear:both\"\u003e\u003c\/div\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/products\/1b45936ab30033aae80c92a08abb3ac5_22f98d54-a553-48b5-b9fd-c489ae69d2bf.jpg?v=1697921264\" alt=\"COBB Tuning TD05H-20G Turbocharger - 2002-2014 Subaru WRX \/ 2004-2021 STI\" style=\"float:left;max-width:47%;margin:0 16px 16px 0;border-radius:4px;\"\u003e\n\n\u003ch4\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003ePlatform: 2002-2007 Subaru WRX\/STI\u003c\/li\u003e\n  \u003cli\u003eMaterial: 304 Stainless Steel — durable, mandrel-bent throughout\u003c\/li\u003e\n  \n  \n  \n  \n  \u003cli\u003eBolt-in at factory connection points — no chassis modification required\u003c\/li\u003e\n  \n  \u003cli\u003eAccessport tune required after installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv style=\"clear:both\"\u003e\u003c\/div\u003e\n\n\u003ch4\u003e\u003cstrong\u003eFitment Notes\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003ePlatform: 2002-2007 Subaru WRX\/STI\u003c\/li\u003e\n  \n  \u003cli\u003eAccessport tune required after installation — do not run on stock ECU calibration\u003c\/li\u003e\n  \u003cli\u003eConnects at factory downpipe flange — verify downpipe connection compatibility\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eNOTE: Ships via UPS\/FedEx — signature required at delivery\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003e\u003cstrong\u003eStraight From Subispeed\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe Cobb uppipe is one of the most underrated upgrades on the GD WRX\/STI — it directly improves the exhaust gas energy reaching the turbine wheel, which shows up as improved spool speed and better mid-range boost delivery before the downpipe is even touched.\u003c\/p\u003e\n\n\u003ch4\u003e\u003cstrong\u003eWhat's Included\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eCobb Stainless Steel Uppipe — 2002-2007 Subaru WRX\/STI\u003c\/li\u003e\n  \u003cli\u003eAll gaskets and hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003e\u003cstrong\u003eAbout Cobb Tuning\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eCobb Tuning has been developing performance parts and tuning solutions for Subaru vehicles since 1999. Based in Austin, Texas, Cobb built their reputation on the Accessport — the most widely used Subaru ECU tuning device on the market — and expanded that into a full ecosystem of intake, exhaust, drivetrain, and engine bay accessories engineered specifically for the platforms they support. Every Cobb product is developed in-house and validated on their own test vehicles before it reaches customers. Subispeed carries the full Cobb catalog because their engineering standards and platform-specific development process consistently produce parts that work exactly as advertised.\u003c\/p\u003e\n\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eYear\u003c\/th\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e2008-2014\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eImpreza\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e2015-2021\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eWrx Sti\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"COBB","offers":[{"title":"Default Title","offer_id":45765036081441,"sku":"COBBE1120G","price":1470.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/products\/10db8509e0bc3ce9fb8a28513abb991b.jpg?v=1697921264"},{"product_id":"blc-dom1-5xt-blouch-dominator-1-5xt-r-10cm-2-turbo","title":"Blouch Dominator 1.5XT-R 10cm^2 Turbo - Subaru Models (inc. 2002-2007 WRX \/ 2004-2021 STI)","description":"\u003ch4\u003eHIGHLIGHTS:\u003c\/h4\u003e\r\n\r\n\u003cul\u003e\r\n\t\u003cli\u003eDirect bolt-on turbo\u003c\/li\u003e\r\n\t\u003cli\u003eCapable of making up to 480 HP with supporting modifications\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003ch3 align=\"center\"\u003eBlouch Dominator 1.5XT-R 10cm2 Turbocharger 2002-2007 Subaru WRX 2004+ Subaru STI\u003c\/h3\u003e\r\n\r\n\u003chr\u003e\r\n\u003ch4\u003eTurbo Specs:\u003c\/h4\u003e\r\n\r\n\u003cul\u003e\r\n\t\u003cli\u003ePart of Blouch's XT-R line of turbochargers\u003c\/li\u003e\r\n\t\u003cli\u003eBillet compressor wheel design optimize the aerodynamics of a turbo and increase compressor flow within the same inducer geometry\u003c\/li\u003e\r\n\t\u003cli\u003eDesigned with Garrett GT turbine and full ball-bearing technology\u003c\/li\u003e\r\n\t\u003cli\u003eAdjustable wastegate actuator\u003c\/li\u003e\r\n\t\u003cli\u003eIncludes a wastegate actuator that is pre-calibrated to 15 psi\u003c\/li\u003e\r\n\t\u003cli\u003e56mm turbine\u003c\/li\u003e\r\n\t\u003cli\u003e10cm2 housing\u003c\/li\u003e\r\n\t\u003cli\u003eSupports up to 480 HP\u003c\/li\u003e\r\n\t\u003cli\u003eComplete bolt-on package\u003c\/li\u003e\r\n\t\u003cli\u003eIncludes stainless steel oil feed line\u003c\/li\u003e\r\n\t\u003cli\u003eIncludes oil drain tube and coolant lines\u003c\/li\u003e\r\n\t\u003cli\u003eIncludes new gaskets and hardware\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003cp\u003e \u003c\/p\u003e\r\n\r\n\u003ch4 align=\"center\"\u003eBlouch Dominator 1.5XT-R 10cm2 Turbocharger\u003c\/h4\u003e\r\n\r\n\u003cp\u003eThis is a ball-bearing turbocharger that can support up to about 480 horsepower with supporting modifications to boost your Subaru into an entirely different car and driving experience. It features a billet compressor wheel with the latest in ball=bearing technology to provide fast spooling characteristics. \u003c\/p\u003e\r\n\r\n\u003cp\u003eThis is a direct bolt-in turbocharger that will come provided with all of the required oil drain tube and coolant lines and will make a substantial amount of power with the right tune and supporting modifications.\u003c\/p\u003e","brand":"Blouch","offers":[{"title":"Default Title","offer_id":45764755259681,"sku":"BLCDOM1.5XT","price":2120.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/products\/921cca3588897cc2db95a436cf0fba25.jpg?v=1697920101"},{"product_id":"td05h-18gxt-blouch-td05h-18gxt-7cm-2-turbo","title":"Blouch TD05H-18GXT 7cm2 Turbo - Subaru Models (inc. 2002-2007 WRX \/ 2004-2021 STI)","description":"AN AWESOME DIRECT BOLT-ON OPTION GOOD FOR 430 HP\r\n\u003ch3\u003eBlouch TD05H-18GXT 7cm2 Turbo\u003c\/h3\u003e\r\n\r\n\u003chr\u003e\r\n\u003ch4\u003eSPECS:\u003c\/h4\u003e\r\n\r\n\u003cul\u003e\r\n\t\u003cli\u003eFully machined billet 18G-XT compressor wheel\u003c\/li\u003e\r\n\t\u003cli\u003eCustom high flow, low-inertia TD05H turbine wheel\u003c\/li\u003e\r\n\t\u003cli\u003e7cm2 exhaust housing\u003c\/li\u003e\r\n\t\u003cli\u003eRated at 430HP\u003c\/li\u003e\r\n\t\u003cli\u003ePainted turbine housing\u003c\/li\u003e\r\n\t\u003cli\u003eIncludes new downpipe and up pipe gaskets\u003c\/li\u003e\r\n\t\u003cli\u003eComplete with coolant pipes and turbo oil drain tube installed\u003c\/li\u003e\r\n\t\u003cli\u003eNo modification to intake, exhaust, and oil and coolant connections to make this turbocharger direct bolt-on\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003cp\u003e \u003c\/p\u003e\r\n\r\n\u003ch4\u003eAN AWESOME DIRECT BOLT-ON OPTION GOOD FOR 430 HP\u003c\/h4\u003e\r\n\r\n\u003cp\u003eThis is the Blouch Performance TD05H-18GXT with the 7cm2 exhaust housing. This is a great option for those of you looking to make up to 430 HP with supporting modifications. Blouch does an excellent job of providing you with a complete bolt-on package provided with pre-installed oil drain and coolant lines with new gaskets included, and it is capable of supporting up to 430 HP with the right supporting modifications.\u003c\/p\u003e","brand":"Blouch","offers":[{"title":"Default Title","offer_id":45764835049761,"sku":"BLCTD05H-18GXT","price":1375.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/products\/665970029ca8741be2a542270533f865.jpg?v=1697920405"},{"product_id":"blc-dom1-5xt10cm-2coat-blouch-dominator-1-5xt-r-10cm-2-ceramic-coated-turbo","title":"Blouch Dominator 1.5XT-R 10cm^2 Ceramic Coated Turbo - Subaru Models (inc. 2002-2007 WRX \/ 2004-2021 STI)","description":"\u003ch4\u003eHIGHLIGHTS:\u003c\/h4\u003e\r\n\r\n\u003cul\u003e\r\n\t\u003cli\u003eRated to 40 HP with supporting modifications\u003c\/li\u003e\r\n\t\u003cli\u003eDirect bolt-on upgrade\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003ch3 align=\"center\"\u003eBlouch Dominator 1.5XT-R 10cm2 Ceramic Coated Turbocharger 2002-2007 Subaru WRX 2004+ Subaru STI\u003c\/h3\u003e\r\n\r\n\u003chr\u003e\r\n\u003ch4\u003eDominator 1.5XT-R 10cm2 Specs:\u003c\/h4\u003e\r\n\r\n\u003cul\u003e\r\n\t\u003cli\u003ePart of Blouch's XT-R line of turbochargers\u003c\/li\u003e\r\n\t\u003cli\u003eBillet compressor wheel design optimize the aerodynamics of a turbo and increase compressor flow within the same inducer geometry\u003c\/li\u003e\r\n\t\u003cli\u003eDesigned with Garrett GT turbine and full ball-bearing technology\u003c\/li\u003e\r\n\t\u003cli\u003eAdjustable wastegate actuator\u003c\/li\u003e\r\n\t\u003cli\u003eThe wastegate actuator is pre-calibrated to 15 psi\u003c\/li\u003e\r\n\t\u003cli\u003e10cm2 housing\u003c\/li\u003e\r\n\t\u003cli\u003eCapable of making up to 480 HP with supporting modifications\u003c\/li\u003e\r\n\t\u003cli\u003eComplete bolt-on package\u003c\/li\u003e\r\n\t\u003cli\u003eIncludes stainless steel oil feed line\u003c\/li\u003e\r\n\t\u003cli\u003eIncludes oil drain tube and coolant lines\u003c\/li\u003e\r\n\t\u003cli\u003eIncludes new gaskets and hardware\u003c\/li\u003e\r\n\t\u003cli\u003eBlack compressor cover option\u003c\/li\u003e\r\n\t\u003cli\u003eCeramic coated exhaust housing\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003cp\u003e \u003c\/p\u003e\r\n\r\n\u003ch4 align=\"center\"\u003eBlouch Dominator 1.5XT-R 10cm2 Ceramic Coated Turbocharger\u003c\/h4\u003e\r\n\r\n\u003cp\u003eThis is a ball-bearing turbocharger that can support up to about 480 horsepower with supporting modifications to boost your Subaru into an entirely different car and driving experience. It features a billet compressor wheel with the latest in ball=bearing technology to provide fast spooling characteristics. \u003c\/p\u003e\r\n\r\n\u003cp\u003eThis is a direct bolt-in turbocharger that will come provided with all of the required oil drain tube and coolant lines and will make a substantial amount of power with the right tune and supporting modifications.\u003c\/p\u003e","brand":"Blouch","offers":[{"title":"Default Title","offer_id":45766821314849,"sku":"BLC10-10-3004","price":2261.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/products\/69206edc8ec0245c8261b63dadf39e3f.jpg?v=1697913651"},{"product_id":"blc-dom2-5xtr3in-blouch-dominator-2-5xt-r-10cm-2-3in-inlet-turbo","title":"Blouch Dominator 2.5XT-R 10cm^2 3in Inlet Turbo - Subaru Models (inc. 2002-2007 WRX \/ 2004-2021 STI)","description":"\u003cp\u003eHIGHLIGHTS:\u003c\/p\u003e\r\n\r\n\u003cul\u003e\r\n\t\u003cli\u003eDirect bolt-on upgrade\u003c\/li\u003e\r\n\t\u003cli\u003eRated to 490 HP with supporting modifications\u003c\/li\u003e\r\n\t\u003cli\u003e3-inch inlet size\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003ch3 align=\"center\"\u003eBlouch Dominator 2.5XT-R 10cm2 3-Inch Inlet Turbocharger \u003c\/h3\u003e\r\n\r\n\u003ch4\u003eDominator 2.5XT-R Specs:\u003c\/h4\u003e\r\n\r\n\u003cul\u003e\r\n\t\u003cli\u003ePart of Blouch's XT-R line of turbochargers\u003c\/li\u003e\r\n\t\u003cli\u003eBillet compressor wheel design optimizes the aerodynamics of a turbo and increases compressor flow within the same inducer geometry\u003c\/li\u003e\r\n\t\u003cli\u003eDesigned with Garrett GT turbine and full ball-bearing technology\u003c\/li\u003e\r\n\t\u003cli\u003eAdjustable wastegate actuator\u003c\/li\u003e\r\n\t\u003cli\u003e3-inch inlet\u003c\/li\u003e\r\n\t\u003cli\u003eThe wastegate actuator is pre-calibrated to 15 psi\u003c\/li\u003e\r\n\t\u003cli\u003e10cm2 housing\u003c\/li\u003e\r\n\t\u003cli\u003eCapable of making up to 490 HP with supporting modifications\u003c\/li\u003e\r\n\t\u003cli\u003eComplete bolt-on package\u003c\/li\u003e\r\n\t\u003cli\u003eIncludes stainless steel oil feed line\u003c\/li\u003e\r\n\t\u003cli\u003eIncludes oil drain tube and coolant lines\u003c\/li\u003e\r\n\t\u003cli\u003eIncludes new gaskets and hardware\u003c\/li\u003e\r\n\t\u003cli\u003eBlack compressor cover option\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003cp\u003e \u003c\/p\u003e\r\n\r\n\u003ch4 align=\"center\"\u003eBlouch Dominator 2.5XT-R 10cm2 3-Inch Inlet Turbocharger\u003c\/h4\u003e\r\n\r\n\u003cp\u003eThe Dominator 2.5XT-R features the latest in ball-bearing technology to design a turbocharger capable of producing up to 490 horsepower with supporting modifications, with fast-spooling characteristics. It is capable of making a large yet limited amount of power for stock engines, and it makes for a powerful and reliable mid-sized turbocharger for your street car, race car, or rally car. \u003c\/p\u003e\r\n\r\n\u003ch4\u003eThis is a direct drop-in turbocharger that will come supplied with the oil feed line, oil drain line, and coolant lines with new gaskets and hardware. Note that this particular turbocharger has the 3-inch inlet option so some modification will be necessary depending on what intake setup you choose to employ. \u003c\/h4\u003e","brand":"Blouch","offers":[{"title":"Default Title","offer_id":45766833570081,"sku":"BLCDOM2.5XTR3IN","price":1925.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/products\/bfa5661f4f8886bc8c53be50efbe7e34.jpg?v=1697913735"},{"product_id":"tomei-arms-bx7760-turbo-2015-2021-subaru-sti","title":"Tomei ARMS BX7760 Turbo  - Subaru Models (Inc. 2002-2007 Subaru WRX \/ 2004-2021 STI \/ 2005-2006 Baja \/ 2004-2008 Forester \/ 2005-2006 Sab 9-2X)","description":"\u003cp\u003eThe newly designed Billet Compressor Wheel offers significant improvement over traditional cast compressor wheels. 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This turbocharger features a CNC billet compressor wheel for durability over the conventional cast compressor wheel, and it also features Tomei's Multi-Rate Billet Actuator to allow the user to perform fine-tuning of the boost so you can hit your preferred targets every time.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eA large capacity multi rate billet actuator is utilized, with a reinforced forged billet construction. Includes a total of 6 springs for fine boost adjustments. Up to 3 springs can be combined to find the perfect setup. Swivel type nipple allows for greater freedom when routing hoses.\u003c\/p\u003e","brand":"Tomei","offers":[{"title":"Default Title","offer_id":45767108231457,"sku":"TOMTB403A-SB01A","price":1780.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/products\/72b38b7645de511d875940cda4772080.jpg?v=1697916249"},{"product_id":"tb401a-sb01a-tomei-arms-mx7760-turbo","title":"Tomei ARMS MX7760 Turbo - Subaru Models (Inc. 2002-2007 Subaru WRX \/ 2004-2021 STI \/ 2004-2008 Forester)","description":"\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003eTomei ARMS M7760 Turbocharger (380hp)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis turbine kit from Tomei now comes standard with the new Billet Actuator. Retains the response feel of the original stock turbo, but delivers increased power gains even at higher up in the power band range without sacrificing torque. The Billet Actuator is specifically designed for superior response and power gains, without compromising torque.Rated @ 380hp\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNOTE:\u003c\/strong\u003e This is a BOLT ON turbo. No major modifications required.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eIncludes\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eTurbo\u003c\/li\u003e\n\u003cli\u003eWater Lines\u003c\/li\u003e\n\u003cli\u003eOil Return Lines\u003c\/li\u003e\n\u003cli\u003eGaskets\u003c\/li\u003e\n\u003cli\u003eBolts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eCompressor Wheel: 60 Trim, 52.6mm Inlet Diameter, 68.0mm Exit Diameter\u003c\/li\u003e\n\u003cli\u003eTurbine Wheel: 76.9 Trim, 56.0mm Inlet Diameter, 49.1mm Exit Diameter.\u003c\/li\u003e\n\u003cli\u003eBearing Type: Journal Bearing\u003c\/li\u003e\n\u003cli\u003eFitment: OEM Upgrade\u003c\/li\u003e\n\u003cli\u003eInlet Size: OEM\u003c\/li\u003e\n\u003cli\u003eWastegate: Internal\u003c\/li\u003e\n\u003cli\u003eOil Line Included: Yes\u003c\/li\u003e\n\u003cli\u003ePorted Turbine Housing: No\u003c\/li\u003e\n\u003cli\u003eGaskets Included: Yes\u003c\/li\u003e\n\u003cli\u003eRated Horsepower: 380hp\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Tomei","offers":[{"title":"Default Title","offer_id":45767111803169,"sku":"TOMTB401A-SB01A","price":1580.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/products\/cc9281af8f4755ea47f7bb011aad9e7c.jpg?v=1697916588"},{"product_id":"blc-dom3-0xtr-blouch-dominator-3-0xt-r-10cm-2-turbo","title":"Blouch Dominator 3.0XT-R 10cm^2 Turbo - Subaru Models (inc. 2002-2007 WRX \/ 2004-2021 STI)","description":"\u003cp\u003eHIGHLIGHTS:\u003c\/p\u003e\r\n\r\n\u003cul\u003e\r\n\t\u003cli\u003eComplete bolt-on turbocharger\u003c\/li\u003e\r\n\t\u003cli\u003eCapable of producing up to 490 HP with supporting modifications \u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003ch3 align=\"center\"\u003eBlouch Dominator 3.0XT-R 10cm2 Turbocharger 2002-2007 Subaru WRX 2004+ Subaru STI\u003c\/h3\u003e\r\n\r\n\u003chr\u003e\r\n\u003ch4\u003eDominator 3.0XT-R 10cm2 Specs:\u003c\/h4\u003e\r\n\r\n\u003cul\u003e\r\n\t\u003cli\u003ePart of Blouch's XT-R line of turbochargers\u003c\/li\u003e\r\n\t\u003cli\u003eBillet compressor wheel design optimize the aerodynamics of a turbo and increase compressor flow within the same inducer geometry\u003c\/li\u003e\r\n\t\u003cli\u003eDesigned with Garrett GT turbine and full ball-bearing technology\u003c\/li\u003e\r\n\t\u003cli\u003eAdjustable wastegate actuator\u003c\/li\u003e\r\n\t\u003cli\u003eThe wastegate actuator is pre-calibrated to 15 psi\u003c\/li\u003e\r\n\t\u003cli\u003e8cm2 housing\u003c\/li\u003e\r\n\t\u003cli\u003eCapable of making up to 490 HP with supporting modifications\u003c\/li\u003e\r\n\t\u003cli\u003eComplete bolt-on package\u003c\/li\u003e\r\n\t\u003cli\u003eIncludes stainless steel oil feed line\u003c\/li\u003e\r\n\t\u003cli\u003eIncludes oil drain tube and coolant lines\u003c\/li\u003e\r\n\t\u003cli\u003eIncludes new gaskets and hardware\u003c\/li\u003e\r\n\t\u003cli\u003eBlack compressor cover option\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003cp\u003e \u003c\/p\u003e\r\n\r\n\u003ch4 align=\"center\"\u003eBlouch Dominator 3.0XT-R 10cm2\u003c\/h4\u003e\r\n\r\n\u003cp\u003eThe  Dominator 3.0XT-R 10cm2Turbocharger features the latest in ball-bearing technology to design a turbocharger capable of producing up to 490 horsepower with supporting modifications, with fast-spooling characteristics. It is capable of making a large yet limited amount of power for stock engines, and it makes for a powerful and reliable mid-sized turbocharger for your street car, race car, or rally car. \u003c\/p\u003e\r\n\r\n\u003cp\u003eThis is a complete bolt-on turbocharger that will include the oil feed line, oil drain tube, coolant lines, as well as all of the appropriate gaskets. With the right tune, and supporting modifications this turbocharger is capable of producing some serious steam to take your Subaru onto the next level. \u003c\/p\u003e\r\n\r\n\u003cp\u003e \u003c\/p\u003e","brand":"Blouch","offers":[{"title":"Default Title","offer_id":45763300983073,"sku":"BLCDOM3.0G2-R","price":2035.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/products\/987e69ee9b250001cb243e0ea8c670b8.jpg?v=1697902004"},{"product_id":"grm-057007-grimmspeed-boost-solenoid","title":"GrimmSpeed Boost Control Solenoid - 2008-2021 Subaru STI","description":"GrimmSpeed provides the most complete and easy to use 3-Port Electronic Boost Solenoid for available for all turbo Subarus. Unlike your OEM 2-port solenoid, the GrimmSpeed BCS will allow for extremely high-resolution boost control, providing your tuner with the hardware he needs to safely tune your car with rock-solid boost levels.\r\n\u003ch4\u003eThe Original Direct-Fit BCS for turbo Subarus\u003c\/h4\u003e\r\n\r\n\u003cp\u003eGrimmSpeed provides the most complete and easy to use 3-Port Electronic Boost Solenoid for available for all turbo Subarus. Unlike your OEM 2-port solenoid, this solenoid will allow for extremely high-resolution boost control, providing your tuner with the hardware he needs to safely tune your car with rock-solid boost levels.\u003c\/p\u003e\r\n\r\n\u003cp\u003eUsing GrimmSpeed's solenoid, you are able to spool your turbo quicker and maintain tight control of boost levels throughout your power curve. In addition, our solenoid features a balanced valve to withstand up to 120psi without a slowing response by even a single millisecond.\u003c\/p\u003e\r\n\r\n\u003cp\u003e \u003c\/p\u003e\r\n\r\n\u003ch4\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/h4\u003e\r\n\r\n\u003cul\u003e\r\n\t\u003cli\u003e\n\u003cstrong\u003eDecrease Spool Time \u003c\/strong\u003e - flows 10% more than the competition\u003c\/li\u003e\r\n\t\u003cli\u003e\n\u003cstrong\u003ePlug and Play into OEM Harness \u003c\/strong\u003e - no splicing wires like other BCS solutions\u003c\/li\u003e\r\n\t\u003cli\u003e\n\u003cstrong\u003eWorks Safely with Factory Subaru ECU \u003c\/strong\u003e -\u003cstrong\u003e \u003c\/strong\u003ecustom coil to match ECU voltage\u003c\/li\u003e\r\n\t\u003cli\u003e\n\u003cstrong\u003eNickel Plated Fittings \u003c\/strong\u003e - not the easily breakable plastic fittings!\u003c\/li\u003e\r\n\t\u003cli\u003e\n\u003cstrong\u003e15min Installation \u003c\/strong\u003e - extremely simple with GrimmSpeed's written and video guides\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003chr\u003e\r\n\u003ch4\u003eInstallation Video\u003c\/h4\u003e\r\n\r\n\u003cdiv class=\"video-container\"\u003e\u003ciframe frameborder=\"0\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/H9KSMr0q0uY?feature=player_embedded\" width=\"560\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\r\n\r\n\u003ch4\u003eDesign\u003c\/h4\u003e\r\n\r\n\u003cp\u003eRevolutionizing the Subaru boost solenoid market, we have created model specific install brackets that allow you to install our Boost Control Solenoid with a factory fit and finish. To top it all off, our solenoid also uses a Subaru wiring harness connector so that you can simply unplug your OEM solenoid and plug ours in. No more cutting and crimping OEM wires together!\u003c\/p\u003e\r\n\r\n\u003cp\u003eThe solenoid itself is one of a kind. MAC manufactures pneumatic control products for the largest commercial operations in the world, where every minute of downtime can cost tens of thousands of dollars, so we worked closely with their engineers to design this unique valve, incorporating proprietary features, exclusive to GrimmSpeed, that make our solenoid the toughest on the market. Those features include special seals to protect it from moisture and high temp coils to keep response times at 6 milliseconds or less, even in extreme heat. We have worked with many of the top tuners in the country to ensure that our solenoid works safely with the factory Subaru ECU.\u003c\/p\u003e\r\n\r\n\u003cp\u003e\u003cimg src=\"https:\/\/images.jbautosports.com\/image\/upload\/s--dwM3sq4V--\/f_auto\/v1\/content\/p3kecyyk3n7ptfvzgsfx\"\u003e\u003c\/p\u003e\r\n\r\n\u003ch4\u003eMaterials\u003c\/h4\u003e\r\n\r\n\u003cp\u003eOur special solenoid features, combined with our factory-fit brackets, ensure that this complete boost control solution will withstand the harsh heat and vibration of your engine bay. The Subaru harness connectors that we use include weatherproof terminal seals, carefully crimped with DELPHI equipment by our expert assembly staff. Mounting brackets are laser cut and then black zinc plated to ensure corrosion resistance. Each bracket has threaded PEM nuts pressed in for a solid connection with no risk of stripping threads. Each low profile 1\/8\" NPT nickel plated fitting is installed in the proper orientation using a 120psi thread sealant for a clean, compact, robust installation.\u003c\/p\u003e\r\n\r\n\u003cp\u003e\u003cimg src=\"https:\/\/images.jbautosports.com\/image\/upload\/s--QNZGp5Zn--\/f_auto\/v1\/content\/finpwxbspxgirzgeejdm\"\u003e\u003c\/p\u003e\r\n\r\n\u003ch4\u003eTrust Your Tuner\u003c\/h4\u003e\r\n\r\n\u003cp\u003eYou don't need to take our word for it, trust your tuner. When it comes to boost control systems, be sure to consult with your tuner to ensure that you're building a setup that they're confident tuning. The good news is that with well over 25,000 units in use on some of the fastest Subarus in the world, with the GrimmSpeed Boost Control Solenoid, you'll be in great company. As with any change to your boost control system, upgrading to a 3-port solenoid does require tuning.\u003c\/p\u003e\r\n\r\n\u003cp\u003e\u003cimg src=\"https:\/\/images.jbautosports.com\/image\/upload\/s--1hJJct-1--\/f_auto\/v1\/content\/gr1xo7eshhzuntbsmgiw\"\u003e\u003c\/p\u003e","brand":"GrimmSpeed","offers":[{"title":"Default Title","offer_id":45763355279649,"sku":"grmGRM057007","price":140.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/products\/e19536fab3bedd96f3bf9ccb3169c246.jpg?v=1689326969"},{"product_id":"td05h-18gxtr8cm-blouch-18gxt-r-8cm-2-turbo","title":"Blouch 18GXT-R 8cm^2 Turbo - Subaru Models (inc. 2002-2007 WRX \/ 2004-2021 STI)","description":"\u003ch3\u003eBlouch TD05H-18GXT-R 8cm2 Billet Ball Bearing Turbocharger 2002-2007 Subaru WRX 2004+ Subaru STI\u003c\/h3\u003e\r\n\r\n\u003chr\u003e\r\n\u003ch4\u003e TD05H-18GXT-R 8cm2 Specs:\u003c\/h4\u003e\r\n\r\n\u003cul\u003e\r\n\t\u003cli\u003e43 lb\/min flow rate\u003c\/li\u003e\r\n\t\u003cli\u003eBall-bearing journal increases spool time\u003c\/li\u003e\r\n\t\u003cli\u003eBlouch 68mm fully machined billet XT compressor wheel\u003c\/li\u003e\r\n\t\u003cli\u003eCustom high flow low inertia 56.5mm turbine wheel\u003c\/li\u003e\r\n\t\u003cli\u003eCustom low-friction, low-inertia ceramic ball-bearing CHRA\u003c\/li\u003e\r\n\t\u003cli\u003eRated for 430hp\u003c\/li\u003e\r\n\t\u003cli\u003ePainted turbine housing\u003c\/li\u003e\r\n\t\u003cli\u003eIncludes new downpipe and up pipe gaskets\u003c\/li\u003e\r\n\t\u003cli\u003eComplete with coolant pipes and turbo oil drain tube installed\u003c\/li\u003e\r\n\t\u003cli\u003eNo modification to intake, exhaust, and oil and coolant connections to make this turbocharger direct bolt-on\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003cp\u003e \u003c\/p\u003e\r\n\r\n\u003ch4\u003eBlouch TD05H-18GXT-R 8cm2 Ball-Bearing Turbocharger\u003c\/h4\u003e\r\n\r\n\u003cp\u003eWhat is so excellent about this particular turbocharger is that it is capable of supporting up to 430 HP in a complete bolt-on package without having to modify the intake or exhaust for fitment. That is plenty of power to be had on both a daily driven street car or a dedicated rally or race car. With the right supporting modifications such as a proper tune and a built fuel system, this turbocharger is a secret weapon that makes for an excellent OEM replacement. \u003c\/p\u003e\r\n\r\n\u003cp\u003eThe TD05H-18GXT 8cm2 Ball-Bearing Turbocharger features the latest in Blouch's billet compressor wheel technology, and will come pre-assembled with oil and coolant lines, and will come equipped with the appropriate gaskets making this turbocharger ready to install right out of the box. \u003c\/p\u003e","brand":"Blouch","offers":[{"title":"Default Title","offer_id":45763374022945,"sku":"BLCTD05H-18GXTR8CM","price":1705.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/products\/21aa8a679983e2e89535927f5b5fe0f9.jpg?v=1697903090"},{"product_id":"090232-grimmspeed-front-mount-intercooler-pipe-kit-black","title":"GrimmSpeed Front Mount Intercooler Pipe Kit Black - 2015-2021 Subaru STI","description":"GrimmSpeed Intercooler WRX Pipe Kit Black 2015+ STI\r\nGrimmSpeed Intercooler WRX Pipe Kit Black 2015+ STI","brand":"GrimmSpeed","offers":[{"title":"Default Title","offer_id":45763451453729,"sku":"grmGRM090232","price":699.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/products\/245e11bcd2cc4747d37621572861b0c7.jpg?v=1697904853"},{"product_id":"090260-grimmspeed-front-mount-intercooler-core-coated-black","title":"GrimmSpeed Front Mount Intercooler Core Coated Black - 2015-2021 Subaru WRX \/ STI","description":"GrimmSpeed Intercooler Core (Coated)\r\nGrimmSpeed Intercooler Core (Coated)","brand":"GrimmSpeed","offers":[{"title":"Default Title","offer_id":45763451978017,"sku":"grmGRM090260","price":999.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/products\/df1a1b0fde2b5f4c320fba069d538a7e.jpg?v=1697904787"},{"product_id":"090235-grimmspeed-intercooler-core-suabru-wrx-sti-2015","title":"GrimmSpeed Intercooler Core - 2015-2021 Subaru WRX \/ STI","description":"GrimmSpeed Intercooler Core\r\nGrimmSpeed Intercooler Core","brand":"GrimmSpeed","offers":[{"title":"Default Title","offer_id":45763448308001,"sku":"grmGRM090235","price":879.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/products\/6e3b2f2a709f0a3ca10cabe6d76f5922_926380a6-c112-4c93-aba5-706571199552.jpg?v=1697904685"},{"product_id":"tomei-arms-bx8265-turbo-2002-2007-subaru-wrx-2004-2021-sti","title":"Tomei ARMS BX8265 Turbo  -  Subaru Models (Inc. 2002-2007 Subaru WRX \/ 2004-2021 STI \/ 2005-2006 Baja \/ 2004-2008 Forester \/ 2005-2006 Sab 9-2X)","description":"\u003ch3 align=\"center\"\u003e\u003cstrong\u003eTomei ARMS BX8265 Turbo\u003c\/strong\u003e\u003c\/h3\u003e\n\u003chr\u003e\n\u003ch4\u003e\u003cstrong\u003eCNC BILLET COMPRESSOR WHEEL:\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eMachined from aerospace-grade materials\u003c\/li\u003e\n\u003cli\u003eHighly durable and lightweight\u003c\/li\u003e\n\u003cli\u003eMade with thinner blades with a larger surface area\u003c\/li\u003e\n\u003cli\u003eImproves the airflow and turbo spool\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eMULTI-RATE BILLET ACTUATOR:\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eLarge capacity\u003c\/li\u003e\n\u003cli\u003eReinforced forged billet construction\u003c\/li\u003e\n\u003cli\u003eIncludes a total of (6) springs for fine boost adjustments\u003c\/li\u003e\n\u003cli\u003eThe swivel-type nipple allows for greater freedom when routing hoses\u003c\/li\u003e\n\u003cli\u003eYou can combine up to (3) springs to find the perfect setup\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eBX8265 FEATURES:\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eRated up to 450 HP with supporting modifications\u003c\/li\u003e\n\u003cli\u003eBall-bearing type\u003c\/li\u003e\n\u003cli\u003e1.0 BAR initial boost setting\u003c\/li\u003e\n\u003cli\u003eSingle-scroll type\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eCOMPRESSOR WHEEL SPECS:\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e52.8mm inducer\u003c\/li\u003e\n\u003cli\u003e76.2mm exducer\u003c\/li\u003e\n\u003cli\u003e52 trim\u003c\/li\u003e\n\u003cli\u003e6\/6 blades\u003c\/li\u003e\n\u003cli\u003eCNC billet A2618 construction\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eTURBINE WHEEL SPECS:\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e58.8mm exducer\u003c\/li\u003e\n\u003cli\u003e67mm inducer\u003c\/li\u003e\n\u003cli\u003e77 trim\u003c\/li\u003e\n\u003cli\u003e9 blades\u003c\/li\u003e\n\u003cli\u003eCast K418 construction\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eCOMPRESSOR HOUSING SPECS:\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e55.8mm inducer\u003c\/li\u003e\n\u003cli\u003e41.5mm exducer\u003c\/li\u003e\n\u003cli\u003eA\/R: 0.78\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eTURBINE HOUSING SPECS:\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e45.0mm inducer\u003c\/li\u003e\n\u003cli\u003eEJ exducer\u003c\/li\u003e\n\u003cli\u003eA\/R: 0.57\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBX Series\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis is the new Tomei BX-Series Ball-Bearing Turbocharger. The BX-Series is Tomei's latest ball-bearing turbocharger example that features the latest in turbocharger technology. This turbocharger features a CNC billet compressor wheel for durability over the conventional cast compressor wheel, and it also features Tomei's Multi-Rate Billet Actuator to allow the user to perform fine-tuning of the boost so you can hit your preferred targets every time.\u003c\/p\u003e","brand":"Tomei","offers":[{"title":"Default Title","offer_id":45763967025441,"sku":"TOMTB403A-SB01C","price":1780.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/products\/285db278d6a7dc8e7e92dfb213bf2551.jpg?v=1697918042"},{"product_id":"blc-dom3-5xtr-blouch-dominator-3-5xt-r-10cm-2-turbo","title":"Blouch Dominator 3.5XT-R 10cm^2 Turbo - Subaru Models (inc. 2002-2007 WRX \/ 2004-2021 STI)","description":"\u003cp\u003eHIGHLIGHTS:\u003c\/p\u003e\r\n\r\n\u003cul\u003e\r\n\t\u003cli\u003eSupports up to 580 HP with supporting modifications\u003c\/li\u003e\r\n\t\u003cli\u003eComplete bolt-on package\u003c\/li\u003e\r\n\t\u003cli\u003eIdeal for those of you trying to make substantial amounts of power\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003ch3 align=\"center\"\u003eBlouch Blouch Dominator 3.5XT-R 10cm2 Turbocharger 2002-2007 Subaru WRX 2004+ Subaru STI\u003c\/h3\u003e\r\n\r\n\u003chr\u003e\r\n\u003ch4\u003eDominator 3.5XT-R 10cm2 Turbo Specs:\u003c\/h4\u003e\r\n\r\n\u003cul\u003e\r\n\t\u003cli\u003ePart of Blouch's XT-R line of turbochargers\u003c\/li\u003e\r\n\t\u003cli\u003eBillet compressor wheel design optimize the aerodynamics of a turbo and increase compressor flow within the same inducer geometry\u003c\/li\u003e\r\n\t\u003cli\u003eDesigned with Garrett GT turbine and full ball-bearing technology\u003c\/li\u003e\r\n\t\u003cli\u003eAdjustable wastegate actuator\u003c\/li\u003e\r\n\t\u003cli\u003e3-inch inlet\u003c\/li\u003e\r\n\t\u003cli\u003eThe wastegate actuator is pre-calibrated to 15 psi\u003c\/li\u003e\r\n\t\u003cli\u003e10cm2 housing\u003c\/li\u003e\r\n\t\u003cli\u003eCapable of making up to 580 HP with supporting modifications\u003c\/li\u003e\r\n\t\u003cli\u003eComplete bolt-on package\u003c\/li\u003e\r\n\t\u003cli\u003eIncludes stainless steel oil feed line\u003c\/li\u003e\r\n\t\u003cli\u003eIncludes oil drain tube and coolant lines\u003c\/li\u003e\r\n\t\u003cli\u003eIncludes new gaskets and hardware\u003c\/li\u003e\r\n\t\u003cli\u003eBlack compressor cover option\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003cp\u003e \u003c\/p\u003e\r\n\r\n\u003ch4\u003eNOTES:\u003c\/h4\u003e\r\n\r\n\u003cul\u003e\r\n\t\u003cli\u003eThe Dominator 3.5XT-R is a bolt-on upgrade that requires a 3-inch inlet\u003c\/li\u003e\r\n\t\u003cli\u003eBlouch Turbo requires TGV deletes to be used with this turbo and strongly recommends an external gate to achieve maximum performance\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003cp\u003e \u003c\/p\u003e\r\n\r\n\u003ch4 align=\"center\"\u003eBlouch Dominator 3.5XT-R 10cm2 Turbocharger\u003c\/h4\u003e\r\n\r\n\u003cp\u003eFor those of you who are building your engine with forged internals to sustain a high amount of horsepower, you will need the right turbocharger to complete the job. The Blouch Dominator 3.5XT-R 10cm2 Turbocharger will support up to 580 HP with forged internals, a proper tune, and a built fuel system.\u003c\/p\u003e\r\n\r\n\u003cp\u003eThis is an ideal turbocharger for the brave ones building a race car, rally car, or high-horsepower street car. Once installed, this will transform your car into a new powerhouse to stay ahead of the competition. \u003c\/p\u003e\r\n\r\n\u003cp\u003e \u003c\/p\u003e","brand":"Blouch","offers":[{"title":"Default Title","offer_id":45764186702113,"sku":"BLCDOM3.5XTR","price":2085.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/products\/c4c04796a5f5f3f959e333c4b8e4f2c1.jpg?v=1697918696"},{"product_id":"td05h-16gxt8cm2-blouch-td05h-16gxt-8cm-2-turbo","title":"Blouch TD05H-16GXT 8cm^2 Turbo - Subaru Models (inc. 2002-2007 WRX \/ 2004-2021 STI)","description":"\u003ch3\u003eBlouch TD05H-16GXT 8cm Turbo w\/Billet Wheel 2002-2007 Subaru WRX 2004+ Subaru STI\u003c\/h3\u003e\r\n\r\n\u003chr\u003e\r\n\u003ch4\u003eTD05H-16GXT 8cm Specs:\u003c\/h4\u003e\r\n\r\n\u003cul\u003e\r\n\t\u003cli\u003eNew aero of the Blouch fully machined billet XT compressor in a TD05 compressor housing\u003c\/li\u003e\r\n\t\u003cli\u003e8cm2 nozzle area turbine housing\u003c\/li\u003e\r\n\t\u003cli\u003eSupports up to 410 HP\u003c\/li\u003e\r\n\t\u003cli\u003eInternal wastegate actuator\u003c\/li\u003e\r\n\t\u003cli\u003eCeramic coated turbine housing\u003c\/li\u003e\r\n\t\u003cli\u003eIncludes new downpipe and up pipe gaskets\u003c\/li\u003e\r\n\t\u003cli\u003eComplete with coolant pipes and turbo oil drain tube installed\u003c\/li\u003e\r\n\t\u003cli\u003eNo modification to intake, exhaust, and oil and coolant connections to make this turbocharger direct bolt-on\u003c\/li\u003e\r\n\t\u003cli\u003eBlack compressor housing option\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003cp\u003e \u003c\/p\u003e\r\n\r\n\u003ch4\u003eBlouch TD05H-16GXT 8cm2 w\/Billet Wheel\u003c\/h4\u003e\r\n\r\n\u003cp\u003eThis particular turbocharger makes for an excellent OEM upgrade as it is a direct bolt-on replacement with no modifications needed to your intake or exhaust system are needed to make this turbocharger work. \u003c\/p\u003e\r\n\r\n\u003cp\u003eDesigned with a billet compressor wheel, this turbocharger is capable of supporting power levels up to 410 HP with the right tune and supporting modifications. The Blouch TD05H-16GXT 8cm2 will come pre-installed with coolant pipes and an oil drain tube, along with the appropriate gaskets making this turbocharger ready to install right out of the box. \u003c\/p\u003e","brand":"Blouch","offers":[{"title":"Default Title","offer_id":45764257906977,"sku":"BLC8-00-1001","price":1279.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/products\/7a863361d2cae3e6568ef79bc8ddb6ac.jpg?v=1697918707"},{"product_id":"126032blk-grimmspeed-bypass-valve-black-subaru-04-21-sti","title":"GrimmSpeed Bypass Valve BLACK - 2004-2021 Subaru STI","description":"\u003cp style=\"text-align:start;\"\u003e\u003cspan style=\"color: rgb(134,134,134);background-color: rgb(255,255,255);font-size: 14px;font-family: Lato, sans-serif;\"\u003eThe GrimmSpeed bypass valves have been a popular item among customers due to their superior quality. However, keeping them in stock has been a challenge due to the complex assembly process, leading to frustration among customers. To address this issue, our team has worked tirelessly to revamp the BPV, streamlining the assembly process and enhancing its performance, reliability, and manufacturability. This ensures that we can meet the high demand for our product and keep our customers satisfied.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"text-align:start;\"\u003e\u003cspan style=\"color: rgb(134,134,134);background-color: rgb(255,255,255);font-size: 14px;font-family: Lato, sans-serif;\"\u003eHighlights\u003c\/span\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli style=\"margin-left:1.5em;\"\u003e\n\u003cspan style=\"color: rgb(134,134,134);background-color: rgb(255,255,255);font-size: 14px;font-family: Lato, sans-serif;\"\u003eGrimmSpeed's bypass valves are of superior quality and in high demand.\u003c\/span\u003e \u003c\/li\u003e\n\u003cli style=\"margin-left:1.5em;\"\u003e\n\u003cspan style=\"color: rgb(134,134,134);background-color: rgb(255,255,255);font-size: 14px;font-family: Lato, sans-serif;\"\u003eOur team has enhanced the performance, reliability, and manufacturability of the BPV through a redesigned internal piston, improved spring tension, and better CNC milling finish.\u003c\/span\u003e \u003c\/li\u003e\n\u003cli style=\"margin-left:1.5em;\"\u003e\n\u003cspan style=\"color: rgb(134,134,134);background-color: rgb(255,255,255);font-size: 14px;font-family: Lato, sans-serif;\"\u003eThe second generation features a 38mm diameter aluminum piston for quick pressure release with buna-n o-rings, swivel fitting for easy installation and custom setups, and an oversized anodized aluminum piston for superior flow.\u003c\/span\u003e \u003c\/li\u003e\n\u003cli style=\"margin-left:1.5em;\"\u003e\n\u003cspan style=\"color: rgb(134,134,134);background-color: rgb(255,255,255);font-size: 14px;font-family: Lato, sans-serif;\"\u003eThe Billet 6061 aluminum alloy valve body and base were created for each fitment and anodized in black to resist corrosion.\u003c\/span\u003e \u003c\/li\u003e\n\u003cli style=\"margin-left:1.5em;\"\u003e\n\u003cspan style=\"color: rgb(134,134,134);background-color: rgb(255,255,255);font-size: 14px;font-family: Lato, sans-serif;\"\u003eThe STI version offers 100% plug-and-play compatibility and accurate alignment.\u003c\/span\u003e \u003c\/li\u003e\n\u003cli style=\"margin-left:1.5em;\"\u003e\n\u003cspan style=\"color: rgb(134,134,134);background-color: rgb(255,255,255);font-size: 14px;font-family: Lato, sans-serif;\"\u003eInspection port for quality control is eliminated in V2 BPV.\u003c\/span\u003e \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"text-align:start;\"\u003e\u003cspan style=\"color: rgb(134,134,134);background-color: rgb(255,255,255);font-size: 14px;font-family: Lato, sans-serif;\"\u003eMATERIAL \u0026amp; DESIGN:\u003c\/span\u003e \u003c\/p\u003e\n\u003cp style=\"text-align:start;\"\u003e\u003cspan style=\"color: rgb(134,134,134);background-color: rgb(255,255,255);font-size: 14px;font-family: Lato, sans-serif;\"\u003eWe created valve body and base for each fitment using billet 6061 aluminum alloy, then anodized them in black to match our other products, providing resistance against corrosion and adding a shiny look. The second generation of our bypass valves is equipped with a 38mm diameter aluminum piston to quickly release pressure. This is a crucial feature for effective operations of a forced-induction platform, as it maintains leak-free functions. Our valves also have buna-n o-rings that provide resistance against abrasion and any possible intake system fluids. We added a swivel fitting that allows for smooth installation and accommodates custom setups.\u003c\/span\u003e \u003c\/p\u003e\n\u003cp style=\"text-align:start;\"\u003e\u003cspan style=\"color: rgb(134,134,134);background-color: rgb(255,255,255);font-size: 14px;font-family: Lato, sans-serif;\"\u003eFIT \u0026amp; PERFORMANCE:\u003c\/span\u003e \u003c\/p\u003e\n\u003cp style=\"text-align:start;\"\u003e\u003cspan style=\"color: rgb(134,134,134);background-color: rgb(255,255,255);font-size: 14px;font-family: Lato, sans-serif;\"\u003eThe great news is that none of our bypass valves require any tuning! Once you fix your car's old and leaky OEM valve with Grimmspeed's bypass valve, you will detect a distinct improvement in the sound and response as air flows through the intake and the car's boost pressure increases more quickly. The STI version of our valve incorporates the recirculating elbow of the original BPV, guaranteeing perfect compatibility and accurate alignment, resulting in a 100% plug-and-play package. Consider the benefits to your car's performance and make the switch today!\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"text-align:start;\"\u003e\u003cspan style=\"color: rgb(134,134,134);background-color: rgb(255,255,255);font-size: 14px;font-family: Lato, sans-serif;\"\u003eCHANGES MADE IN THE V2 BPV:\u003c\/span\u003e \u003c\/p\u003e\n\u003cp style=\"text-align:start;\"\u003e\u003cspan style=\"color: rgb(134,134,134);background-color: rgb(255,255,255);font-size: 14px;font-family: Lato, sans-serif;\"\u003eThe new design eliminated the inspection port that was initially used for quality control. Moreover, we redesigned the internal piston to avoid any potential failure points that we identified in our v1 design. After conducting further testing and development, we also adjusted the tension of the internal spring to better suit the operating environments. In addition, we improved the design of the main body to achieve a better CNC milling finish. Furthermore, we replaced the internal brass piston from v1 with a lighter weight hard aluminum piston to enhance the valve response. Quick specs include CNC-machined 6061 aluminum, a corrosion-resistant anodized finish. An oversized 38mm anodized aluminum piston enables superior flow, and a swivel air fitting facilitates installation and custom setups. The product requires no tuning or adjustment.\u003c\/span\u003e  \u003c\/p\u003e\n","brand":"GrimmSpeed","offers":[{"title":"Default Title","offer_id":47071894995233,"sku":"grmGRM126032BLK","price":299.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/products\/950cc5e92d6640e401ad1d7225a974b5_c15f4e7e-b590-406c-8073-bf185dcaa7a1.jpg?v=1697907407"},{"product_id":"turbo-xs-subaru-20g-turbocharger-2008-2021-subaru-sti","title":"Turbo XS Subaru 20G Turbocharger - 2008-2021 Subaru STI","description":"The TurboXS 20G Turbocharger is a great upgrade over the factory VF Series Turbo. It features a billet compressor wheel with a 53mm Inducer which will fit in the stock inlet with zero modification. The exhaust housing is a 8cm? Turbine housing, great for spool up while providing sufficient turbine flow to make about 470+ whp with the right combination on E85. Specs \u0026amp; Features: Compressor Wheel Inducer - 52.5mm Exducer - 68mm Turbine Wheel: Inducer - 55.8mm Exducer - 49.2mm Turbine Housing - 8cm Oil Feed Line Included\u003cp\u003eThis Part Fits:\u003c\/p\u003e\u003ctable border=\"1\"\u003e\n\u003ctr\u003e\n\u003cth align=\"left\" width=\"100\"\u003eYear\u003c\/th\u003e\n\u003cth align=\"left\" width=\"125\"\u003eMake\u003c\/th\u003e\n\u003cth align=\"left\" width=\"150\"\u003eModel\u003c\/th\u003e\n\u003cth align=\"left\" width=\"80\"\u003eSubmodel\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2004-2005,2009\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eForester\u003c\/td\u003e\n\u003ctd\u003eXT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2002-2014\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eImpreza\u003c\/td\u003e\n\u003ctd\u003eWRX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2005-2006\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eLegacy\u003c\/td\u003e\n\u003ctd\u003eGT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2005-2006\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eOutback\u003c\/td\u003e\n\u003ctd\u003eXT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2015-2021\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eWRX STI\u003c\/td\u003e\n\u003ctd\u003eBase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2015\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eWRX STI\u003c\/td\u003e\n\u003ctd\u003eLaunch Edition\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2015-2021\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eWRX STI\u003c\/td\u003e\n\u003ctd\u003eLimited\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2019\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eWRX STI\u003c\/td\u003e\n\u003ctd\u003eS209\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2016\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eWRX STI\u003c\/td\u003e\n\u003ctd\u003eSeries.HyperBlue\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2018\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eWRX STI\u003c\/td\u003e\n\u003ctd\u003eType RA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Turbo XS","offers":[{"title":"Default Title","offer_id":52575197331745,"sku":"TXSTU-EJ-TXS400","price":1649.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/files\/925832a716fcd2bee75128dbf47bfc78.jpg?v=1776406212"},{"product_id":"tr-gtx2971-twin-scroll-stock-replacement-for-subaru-wrx-02-07-and-sti-04-18","title":"TR GTX2971 Twin Scroll Stock Replacement for Subaru WRX 02-07 and STi 04-18","description":"\u003cp\u003eIntroducing the twin scroll GTX2971 for Subaru 02-07 WRX and 04-18 STi! Just like the GTX2971R,this twin scroll edition features a ball-bearing cartridge, billet compressor wheel , and 10\u003cspan\u003ecm\u003c\/span\u003e\u003csup\u003e2\u003c\/sup\u003e housing. Thanks to the billet compressor wheel the overall weight of the wheel is lighter than competing turbochargers and allows for maximum airflow throughout the unit with the help of point milling on each blade. A unique wheel and blade design, featuring a 20% larger wheel with 17% longer blades than the factory turbocharger. In addition, the GTX2971 features a port and polished exhaust housing to minimize exhaust flow turbulence. All hardware is included with purchase.\u003c\/p\u003e\n\u003cp\u003eThis is the ultimate replacement for Twinscroll VF36 VF37 and VF38 \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNOTE\u003c\/strong\u003e: This turbocharger requires the usage of twin scroll headers and downpipe.\u003c\/p\u003e\n\u003ctable width=\"603\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd bgcolor=\"#CCCCCC\"\u003e\n\u003cp\u003e\u003cstrong\u003eBearing Type:\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd bgcolor=\"#CCCCCC\"\u003e\n\u003cp\u003eBall-Bearing\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eFlange Type:\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003eStandard Subaru 5-Bolts\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd bgcolor=\"#CCCCCC\" rowspan=\"2\"\u003e\u003cstrong\u003eCompressor Wheel:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bgcolor=\"#CCCCCC\"\u003eIn: 54 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd bgcolor=\"#CCCCCC\"\u003eEx: 72 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd height=\"27\" rowspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003eTurbine Wheel:\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003eIn: 60 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEx: 57 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd bgcolor=\"#CCCCCC\"\u003e\n\u003cp\u003e\u003cstrong\u003eTurbine Housing:\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd bgcolor=\"#CCCCCC\"\u003e\n\u003cp\u003e10cm\u003csup\u003e2\u003c\/sup\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eActuator:\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e1.1 bar \/ 16 psi\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd bgcolor=\"#CCCCCC\"\u003e\n\u003cp\u003e\u003cstrong\u003eHorsepower:\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd bgcolor=\"#CCCCCC\"\u003e\n\u003cp\u003e550 HP\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ctable style=\"width: 99.915%; height: 469.454px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"height: 39.2045px;\"\u003e\n\u003cth style=\"width: 26.9684%; height: 39.2045px;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"width: 32.992%; height: 39.2045px;\"\u003eTR-TS1047 Twin Scroll GTX2971\u003c\/th\u003e\n\u003cth style=\"width: 36.4684%; height: 39.2045px;\"\u003eTR-TS1027 Tomioka Racing TD06-20G Billet\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 39.2045px;\"\u003e\n\u003ctd style=\"width: 26.9684%; height: 39.2045px;\"\u003eCompatibility\u003c\/td\u003e\n\u003ctd style=\"width: 32.992%; height: 39.2045px;\"\u003e2002-2007 WRX, 2004-2018 STi\u003c\/td\u003e\n\u003ctd style=\"width: 36.4684%; height: 39.2045px;\"\u003e2002-2007 WRX, 2004-2020 STI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6023px;\"\u003e\n\u003ctd style=\"width: 26.9684%; height: 19.6023px;\"\u003eBearing Type\u003c\/td\u003e\n\u003ctd style=\"width: 32.992%; height: 19.6023px;\"\u003eBall-Bearing\u003c\/td\u003e\n\u003ctd style=\"width: 36.4684%; height: 19.6023px;\"\u003eJournal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2045px;\"\u003e\n\u003ctd style=\"width: 26.9684%; height: 39.2045px;\"\u003eCompressor Wheel Material\u003c\/td\u003e\n\u003ctd style=\"width: 32.992%; height: 39.2045px;\"\u003eBillet\u003c\/td\u003e\n\u003ctd style=\"width: 36.4684%; height: 39.2045px;\"\u003eBillet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2045px;\"\u003e\n\u003ctd style=\"width: 26.9684%; height: 39.2045px;\"\u003eCompressor Wheel Size (mm)\u003c\/td\u003e\n\u003ctd style=\"width: 32.992%; height: 39.2045px;\"\u003eIn: 54, Ex: 72\u003c\/td\u003e\n\u003ctd style=\"width: 36.4684%; height: 39.2045px;\"\u003eIn: 52, Ex: 68\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2045px;\"\u003e\n\u003ctd style=\"width: 26.9684%; height: 39.2045px;\"\u003eTurbine Wheel Size (mm)\u003c\/td\u003e\n\u003ctd style=\"width: 32.992%; height: 39.2045px;\"\u003eIn: 60, Ex: 57\u003c\/td\u003e\n\u003ctd style=\"width: 36.4684%; height: 39.2045px;\"\u003eIn: 61, Ex: 54\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6023px;\"\u003e\n\u003ctd style=\"width: 26.9684%; height: 19.6023px;\"\u003eTurbine Housing Size\u003c\/td\u003e\n\u003ctd style=\"width: 32.992%; height: 19.6023px;\"\u003e10cm2\u003c\/td\u003e\n\u003ctd style=\"width: 36.4684%; height: 19.6023px;\"\u003e8cm2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2045px;\"\u003e\n\u003ctd style=\"width: 26.9684%; height: 39.2045px;\"\u003eWeight of Compressor Wheel\u003c\/td\u003e\n\u003ctd style=\"width: 32.992%; height: 39.2045px;\"\u003eLighter than competing turbos\u003c\/td\u003e\n\u003ctd style=\"width: 36.4684%; height: 39.2045px;\"\u003e10% improvement over standard wheel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2045px;\"\u003e\n\u003ctd style=\"width: 26.9684%; height: 39.2045px;\"\u003eWheel and Blade Design\u003c\/td\u003e\n\u003ctd style=\"width: 32.992%; height: 39.2045px;\"\u003e20% larger wheel, 17% longer blades\u003c\/td\u003e\n\u003ctd style=\"width: 36.4684%; height: 39.2045px;\"\u003eNot specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2045px;\"\u003e\n\u003ctd style=\"width: 26.9684%; height: 39.2045px;\"\u003eExhaust Housing\u003c\/td\u003e\n\u003ctd style=\"width: 32.992%; height: 39.2045px;\"\u003ePort and polished to minimize turbulence\u003c\/td\u003e\n\u003ctd style=\"width: 36.4684%; height: 39.2045px;\"\u003eNot specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2045px;\"\u003e\n\u003ctd style=\"width: 26.9684%; height: 39.2045px;\"\u003eMaximum Horsepower Support\u003c\/td\u003e\n\u003ctd style=\"width: 32.992%; height: 39.2045px;\"\u003e550 HP\u003c\/td\u003e\n\u003ctd style=\"width: 36.4684%; height: 39.2045px;\"\u003e530 HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 38.2045px;\"\u003e\n\u003ctd style=\"width: 26.9684%; height: 38.2045px;\"\u003eSpool Characteristics\u003c\/td\u003e\n\u003ctd style=\"width: 32.992%; height: 38.2045px;\"\u003eTwin-scroll design for optimal spooling\u003c\/td\u003e\n\u003ctd style=\"width: 36.4684%; height: 38.2045px;\"\u003eFast spool, ideal for maintaining high HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2045px;\"\u003e\n\u003ctd style=\"width: 26.9684%; height: 39.2045px;\"\u003eInstallation\u003c\/td\u003e\n\u003ctd style=\"width: 32.992%; height: 39.2045px;\"\u003eRequires twin-scroll headers and downpipe\u003c\/td\u003e\n\u003ctd style=\"width: 36.4684%; height: 39.2045px;\"\u003e100% bolt-on\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eApplications:\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e2002 - 2007 Subaru WRX\u003cbr\u003e2004 - 2018 Subaru STi\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eKit Contents:\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003eTurbocharger\u003cbr\u003eGaskets\u003cbr\u003eHardware Kit\u003cbr\u003eActuator\u003cbr\u003eOil Pipe\u003cbr\u003eWater Pipe\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWastegate actuator spring choice: 1.1 bar vs 1.3 bar (what customers need to know)\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eWhat the spring actually controls (and why it matters)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOn a pneumatic internal wastegate, the actuator spring sets your gate pressure (often called base boost): the boost level where the wastegate starts to open because boost pressure overcomes spring force. Haltech describes it simply: changing spring pressure changes the default boost pressure, and when boost exceeds spring pressure the valve opens and begins regulating boost.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChoose 1.1 bar (16.1 psi) \/ Red if:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYou want a lower boost map (street\/traction\/valet) around the mid-teens. Remember: you can’t go under the spring.\u003c\/p\u003e\n\u003cp\u003eYour normal target boost is roughly 18–22 psi and you want good controller authority and flexibility.\u003c\/p\u003e\n\u003cp\u003eYou’re building a setup where drivability and multiple boost modes matter (daily + weekend map).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChoose 1.3 bar (19.1 psi) \/ Silver if:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYou will not run low boost—your “low boost” is still ~19 psi or higher. (If you need 15–17 psi sometimes, don’t pick this.)\u003c\/p\u003e\n\u003cp\u003eYour normal target boost is roughly 22–28 psi and you want:\u003c\/p\u003e\n\u003cp\u003eless “work” from the boost control system to hit target, and\u003c\/p\u003e\n\u003cp\u003etypically better resistance to the wastegate being pushed open early (especially in higher load \/ backpressure situations).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThere are two different “maximum boost” questions people ask:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e1) Maximum boost your boost control can hold consistently\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUsing the GFB rule-of-thumb (target boost ≤ ~2× gate pressure) :\u003c\/p\u003e\n\u003cp\u003eWith a 1.1 bar \/ 16.1 psi spring, the “control stability ceiling” is roughly ~32 psi (2 × 16.1).\u003c\/p\u003e\n\u003cp\u003eWith a 1.3 bar \/ 19.1 psi spring, the “control stability ceiling” is roughly ~38 psi (2 × 19.1).\u003c\/p\u003e\n\u003cp\u003eReality check: that does not mean “safe to run 32–38 psi.” It means beyond ~2× gate pressure, boost control tends to get inconsistent because the actuator isn’t receiving enough meaningful reference signal for correction. GFB explains that once you go beyond double, boost control becomes less stable and more affected by variables like RPM\/load\/backpressure.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e2) Maximum boost your turbo\/engine can safely run\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThat’s not spring-limited. It’s limited by:\u003c\/p\u003e\n\u003cp\u003eturbo efficiency and speed\/heat,\u003c\/p\u003e\n\u003cp\u003efuel quality and knock margin,\u003c\/p\u003e\n\u003cp\u003eintake temps\/intercooling,\u003c\/p\u003e\n\u003cp\u003eexhaust backpressure,\u003c\/p\u003e\n\u003cp\u003eengine\/clutch\/trans limits,\u003c\/p\u003e\n\u003cp\u003etuner strategy.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFAQ:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I run less boost than the spring rating?\u003c\/strong\u003e\u003cbr\u003eNo. Spring pressure is the lowest boost level you can reach.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes a stiffer spring automatically mean higher peak boost?\u003c\/strong\u003e\u003cbr\u003eNot automatically. It mainly raises minimum boost and changes how the wastegate behaves. Boost above spring comes from the control strategy.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy do people say “don’t exceed 2× the spring”?\u003c\/strong\u003e\u003cbr\u003eBecause boost control gets less stable as target boost gets too far above gate pressure; beyond ~double you tend to lose correction authority.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat spring gives the best spool and boost stability?\u003c\/strong\u003e\u003cbr\u003eA spring that puts gate pressure about 10–20% under your target boost is a strong general guideline for best performance.\u003cbr\u003e\u003c\/p\u003e","brand":"Tomioka Racing (TR)","offers":[{"title":"1.1 bar","offer_id":52655209283873,"sku":"TR-TS1047-1.1","price":1965.0,"currency_code":"USD","in_stock":true},{"title":"1.3 bar","offer_id":52655209316641,"sku":"TR-TS1047-1.3","price":1965.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/files\/TR-TW1047_Web_Pic_8c9a43df-39c9-4bb3-b7a6-10fec97c244c.jpg?v=1778250271"},{"product_id":"tr-td05-16g-bolt-on-turbo-stock-replacement-for-subaru-wrx-2002-2007-sti-2004-2020","title":"TR TD05-16G Bolt On Turbo Stock Replacement for Subaru WRX 2002-2007 \u0026 STI 2004-2020 (TR-TS1002)","description":"\u003cp\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cstrong\u003eRally Race Proven Pacific Forest Rally\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eProven in Rally Racing\u003c\/strong\u003e:\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eTomioka Racing Turbochargers have demonstrated their exceptional performance in the challenging terrain and high-intensity competitions of rally racing.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003ePacific Forest Rally Success\u003c\/strong\u003e:\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eOur turbochargers have earned their reputation by excelling at the Pacific Forest Rally, a renowned event in the world of motorsports.\u003c\/p\u003e\n\u003cp\u003eTR TD05-16G Turbo is the one of the best all-around turbo upgrade for your street car. The turbo characteristic is very similar to factory VF39 Turbo but with an increased spool rate and capacity to handle 330 HP. This makes the TD05-16G a great addition to your engine if you are planning to keep your car daily driver friendly. The turbo comes with all fitting and gaskets, ready to bolt on out of the box.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTurbo Characteristics\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable border=\"0\" cellspacing=\"0\" cellpadding=\"0\" width=\"500\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" bgcolor=\"#CCCCCC\"\u003eBearing Type:\u003c\/td\u003e\n\u003ctd bgcolor=\"#CCCCCC\"\u003eJournal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\"\u003eFlange Type:\u003c\/td\u003e\n\u003ctd\u003eStandard Subaru 5-Bolts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd rowspan=\"2\" width=\"100\" bgcolor=\"#CCCCCC\"\u003eCompressor Wheel\u003c\/td\u003e\n\u003ctd width=\"36\" bgcolor=\"#CCCCCC\"\u003eIn:\u003c\/td\u003e\n\u003ctd width=\"364\" bgcolor=\"#CCCCCC\"\u003e48.30 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd bgcolor=\"#CCCCCC\"\u003eEx:\u003c\/td\u003e\n\u003ctd width=\"364\" bgcolor=\"#CCCCCC\"\u003e68 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd rowspan=\"2\" height=\"27\"\u003e\n\u003cp\u003eTurbine Wheel\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003eIn:\u003c\/td\u003e\n\u003ctd\u003e56 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEx:\u003c\/td\u003e\n\u003ctd\u003e49.2 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" height=\"27\" bgcolor=\"#CCCCCC\"\u003eActuator:\u003c\/td\u003e\n\u003ctd height=\"27\" bgcolor=\"#CCCCCC\"\u003e1.1 Bar \/ 16 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" height=\"27\"\u003eTurbine Housing:\u003c\/td\u003e\n\u003ctd height=\"27\"\u003e7 cm2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" height=\"27\" bgcolor=\"#CCCCCC\"\u003eMax. Power:\u003c\/td\u003e\n\u003ctd height=\"27\" bgcolor=\"#CCCCCC\"\u003e400 HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eApplications:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e2002-2007 Subaru WRX\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e2004-2020 Subaru STI\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eContents of Kit:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cb\u003eTurbocharger\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003eActuator\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003eOil pipe\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003eWater pipe \u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003eGaskets\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003eHardware Kits \u003c\/b\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWastegate actuator spring choice: 1.1 bar vs 1.3 bar (what customers need to know)\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eWhat the spring actually controls (and why it matters)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOn a pneumatic internal wastegate, the actuator spring sets your gate pressure (often called base boost): the boost level where the wastegate starts to open because boost pressure overcomes spring force. Haltech describes it simply: changing spring pressure changes the default boost pressure, and when boost exceeds spring pressure the valve opens and begins regulating boost.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChoose 1.1 bar (16.1 psi) \/ Red if:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYou want a lower boost map (street\/traction\/valet) around the mid-teens. Remember: you can’t go under the spring.\u003c\/p\u003e\n\u003cp\u003eYour normal target boost is roughly 18–22 psi and you want good controller authority and flexibility.\u003c\/p\u003e\n\u003cp\u003eYou’re building a setup where drivability and multiple boost modes matter (daily + weekend map).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChoose 1.3 bar (19.1 psi) \/ Silver if:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYou will not run low boost—your “low boost” is still ~19 psi or higher. (If you need 15–17 psi sometimes, don’t pick this.)\u003c\/p\u003e\n\u003cp\u003eYour normal target boost is roughly 22–28 psi and you want:\u003c\/p\u003e\n\u003cp\u003eless “work” from the boost control system to hit target, and\u003c\/p\u003e\n\u003cp\u003etypically better resistance to the wastegate being pushed open early (especially in higher load \/ backpressure situations).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThere are two different “maximum boost” questions people ask:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e1) Maximum boost your boost control can hold consistently\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUsing the GFB rule-of-thumb (target boost ≤ ~2× gate pressure) :\u003c\/p\u003e\n\u003cp\u003eWith a 1.1 bar \/ 16.1 psi spring, the “control stability ceiling” is roughly ~32 psi (2 × 16.1).\u003c\/p\u003e\n\u003cp\u003eWith a 1.3 bar \/ 19.1 psi spring, the “control stability ceiling” is roughly ~38 psi (2 × 19.1).\u003c\/p\u003e\n\u003cp\u003eReality check: that does not mean “safe to run 32–38 psi.” It means beyond ~2× gate pressure, boost control tends to get inconsistent because the actuator isn’t receiving enough meaningful reference signal for correction. GFB explains that once you go beyond double, boost control becomes less stable and more affected by variables like RPM\/load\/backpressure.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e2) Maximum boost your turbo\/engine can safely run\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThat’s not spring-limited. It’s limited by:\u003c\/p\u003e\n\u003cp\u003eturbo efficiency and speed\/heat,\u003c\/p\u003e\n\u003cp\u003efuel quality and knock margin,\u003c\/p\u003e\n\u003cp\u003eintake temps\/intercooling,\u003c\/p\u003e\n\u003cp\u003eexhaust backpressure,\u003c\/p\u003e\n\u003cp\u003eengine\/clutch\/trans limits,\u003c\/p\u003e\n\u003cp\u003etuner strategy.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFAQ:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I run less boost than the spring rating?\u003c\/strong\u003e\u003cbr\u003eNo. Spring pressure is the lowest boost level you can reach.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes a stiffer spring automatically mean higher peak boost?\u003c\/strong\u003e\u003cbr\u003eNot automatically. It mainly raises minimum boost and changes how the wastegate behaves. Boost above spring comes from the control strategy.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy do people say “don’t exceed 2× the spring”?\u003c\/strong\u003e\u003cbr\u003eBecause boost control gets less stable as target boost gets too far above gate pressure; beyond ~double you tend to lose correction authority.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat spring gives the best spool and boost stability?\u003c\/strong\u003e\u003cbr\u003eA spring that puts gate pressure about 10–20% under your target boost is a strong general guideline for best performance.\u003c\/p\u003e","brand":"Tomioka Racing (TR)","offers":[{"title":"Default Title","offer_id":52655209447713,"sku":"TR-TS1002","price":1095.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/files\/TR-TS1002_1__620x600_c921002d-160b-4b9e-adb0-dfd6ea50b38e.jpg?v=1778250271"},{"product_id":"tr-td05-20g-bolt-on-turbo-stock-replacement-for-subaru-wrx-2002-2007-sti-2004-2020","title":"TR TD05-20G Bolt On Turbo Stock Replacement for Subaru WRX 2002-2007 \u0026 STI 2004-2020","description":"\u003cp\u003eBy far the most popular turbo for Subaru ! If you are looking for a street\/track turbo look no further, the TR TD05-20G turbo makes a excellent street and track turbo. This turbo is capable of up to 400WHP and maintain a street drivability when you are off the track. With a larger wheel blades then the TR TD05-18G this turbo can handle mid to high end horsepower without increasing the lag time on the turbo when compared to stock. The turbo comes with all fitting and gaskets, ready to bolt on out of the box. \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eTurbo Characteristics:\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable cellpadding=\"0\" cellspacing=\"0\" border=\"0\" width=\"500\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd bgcolor=\"#CCCCCC\" colspan=\"2\"\u003eBearing Type:\u003c\/td\u003e\n\u003ctd bgcolor=\"#CCCCCC\"\u003eJournal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\"\u003eFlange Type:\u003c\/td\u003e\n\u003ctd\u003eStandard Subaru 5-Bolts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd bgcolor=\"#CCCCCC\" rowspan=\"2\" width=\"100\"\u003eCompressor Wheel\u003c\/td\u003e\n\u003ctd bgcolor=\"#CCCCCC\" width=\"36\"\u003eIn:\u003c\/td\u003e\n\u003ctd bgcolor=\"#CCCCCC\" width=\"364\"\u003e52.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd bgcolor=\"#CCCCCC\"\u003eEx:\u003c\/td\u003e\n\u003ctd bgcolor=\"#CCCCCC\" width=\"364\"\u003e68 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd rowspan=\"2\" height=\"27\"\u003e\n\u003cp\u003eTurbine Wheel\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003eIn:\u003c\/td\u003e\n\u003ctd\u003e56 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEx:\u003c\/td\u003e\n\u003ctd\u003e49.2 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd bgcolor=\"#CCCCCC\" colspan=\"2\" height=\"27\"\u003eActuator:\u003c\/td\u003e\n\u003ctd bgcolor=\"#CCCCCC\" height=\"27\"\u003e1.1 Bar \/ 16 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" height=\"27\"\u003eTurbine Housing:\u003c\/td\u003e\n\u003ctd height=\"27\"\u003e8 cm2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd bgcolor=\"#CCCCCC\" colspan=\"2\" height=\"27\"\u003eMax. Power:\u003c\/td\u003e\n\u003ctd bgcolor=\"#CCCCCC\" height=\"27\"\u003e450 HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eAPPLICATIONS\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2002-2007 WRX \u003c\/li\u003e\n\u003cli\u003e2004-2020 STI \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eKit Contents\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 1.4em;\"\u003eTurbocharger\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 1.4em;\"\u003eActuator\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 1.4em;\"\u003eOil Pipe\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 1.4em;\"\u003eWater Pipe\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 1.4em;\"\u003eGaskets\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 1.4em;\"\u003eHardware kits\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWastegate actuator spring choice: 1.1 bar vs 1.3 bar (what customers need to know)\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eWhat the spring actually controls (and why it matters)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOn a pneumatic internal wastegate, the actuator spring sets your gate pressure (often called base boost): the boost level where the wastegate starts to open because boost pressure overcomes spring force. Haltech describes it simply: changing spring pressure changes the default boost pressure, and when boost exceeds spring pressure the valve opens and begins regulating boost.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChoose 1.1 bar (16.1 psi) \/ Red if:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYou want a lower boost map (street\/traction\/valet) around the mid-teens. Remember: you can’t go under the spring.\u003c\/p\u003e\n\u003cp\u003eYour normal target boost is roughly 18–22 psi and you want good controller authority and flexibility.\u003c\/p\u003e\n\u003cp\u003eYou’re building a setup where drivability and multiple boost modes matter (daily + weekend map).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChoose 1.3 bar (19.1 psi) \/ Silver if:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYou will not run low boost—your “low boost” is still ~19 psi or higher. (If you need 15–17 psi sometimes, don’t pick this.)\u003c\/p\u003e\n\u003cp\u003eYour normal target boost is roughly 22–28 psi and you want:\u003c\/p\u003e\n\u003cp\u003eless “work” from the boost control system to hit target, and\u003c\/p\u003e\n\u003cp\u003etypically better resistance to the wastegate being pushed open early (especially in higher load \/ backpressure situations).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThere are two different “maximum boost” questions people ask:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e1) Maximum boost your boost control can hold consistently\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUsing the GFB rule-of-thumb (target boost ≤ ~2× gate pressure) :\u003c\/p\u003e\n\u003cp\u003eWith a 1.1 bar \/ 16.1 psi spring, the “control stability ceiling” is roughly ~32 psi (2 × 16.1).\u003c\/p\u003e\n\u003cp\u003eWith a 1.3 bar \/ 19.1 psi spring, the “control stability ceiling” is roughly ~38 psi (2 × 19.1).\u003c\/p\u003e\n\u003cp\u003eReality check: that does not mean “safe to run 32–38 psi.” It means beyond ~2× gate pressure, boost control tends to get inconsistent because the actuator isn’t receiving enough meaningful reference signal for correction. GFB explains that once you go beyond double, boost control becomes less stable and more affected by variables like RPM\/load\/backpressure.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e2) Maximum boost your turbo\/engine can safely run\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThat’s not spring-limited. It’s limited by:\u003c\/p\u003e\n\u003cp\u003eturbo efficiency and speed\/heat,\u003c\/p\u003e\n\u003cp\u003efuel quality and knock margin,\u003c\/p\u003e\n\u003cp\u003eintake temps\/intercooling,\u003c\/p\u003e\n\u003cp\u003eexhaust backpressure,\u003c\/p\u003e\n\u003cp\u003eengine\/clutch\/trans limits,\u003c\/p\u003e\n\u003cp\u003etuner strategy.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFAQ:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I run less boost than the spring rating?\u003c\/strong\u003e\u003cbr\u003eNo. Spring pressure is the lowest boost level you can reach.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes a stiffer spring automatically mean higher peak boost?\u003c\/strong\u003e\u003cbr\u003eNot automatically. It mainly raises minimum boost and changes how the wastegate behaves. Boost above spring comes from the control strategy.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy do people say “don’t exceed 2× the spring”?\u003c\/strong\u003e\u003cbr\u003eBecause boost control gets less stable as target boost gets too far above gate pressure; beyond ~double you tend to lose correction authority.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat spring gives the best spool and boost stability?\u003c\/strong\u003e\u003cbr\u003eA spring that puts gate pressure about 10–20% under your target boost is a strong general guideline for best performance.\u003c\/p\u003e","brand":"Tomioka Racing (TR)","offers":[{"title":"1.1 bar","offer_id":52655209709857,"sku":"TR-TS1001","price":1405.0,"currency_code":"USD","in_stock":true},{"title":"1.3 bar","offer_id":52655209742625,"sku":"TR-TS1001","price":1405.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/files\/dsc_13687_2_6c9d0420-0c89-4b3a-a7b3-a3d93d11636f.jpg?v=1778250271"},{"product_id":"tr-td05-20g-ball-bearing-billet-wheel-bolt-on-turbo-stock-replacement-for-subaru-wrx-02-07-sti-04-21","title":"TR TD05-20G Ball Bearing Billet Wheel Bolt On Turbo Stock Replacement for Subaru WRX 02-07 \u0026 STi 04-21","description":"\u003cp\u003eSlow spool no more! Tomioka Racing’s TD05-20G for Subaru now comes in a ball bearing version. This latest offering breaks the myth of slow spooling TD05-20G. Armed with dual ceramic ball bearings and billet compressor wheel, this TD05-20G will spool close to a factory turbo with the right tune. The configuration provides balanced \u0026amp; improved air flow to the TD05 frame. The faster spooling TD05-20G will inject more driving excitement to your daily Subaru. You can expect the same seamless fitment from this new turbo as its TD05-20G predecessor.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eTurbo Characteristics:\u003c\/strong\u003e\u003c\/h4\u003e\n\u003ctable width=\"656\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003eBearing Type:\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003eBall Bearing\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003eFlange Type:\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003eStandard Subaru 5-Bolts\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd rowspan=\"2\" width=\"100\"\u003e\n\u003cp\u003eCompressor Wheel\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd width=\"36\"\u003e\n\u003cp\u003eIn:\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd width=\"364\"\u003e\n\u003cp\u003e52.5 mm\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eEx:\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd width=\"364\"\u003e\n\u003cp\u003e68 mm\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd rowspan=\"2\"\u003e\n\u003cp\u003eTurbine Wheel\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003eIn:\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e56 mm\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eEx:\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e49.2 mm\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003eActuator:\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e1.1 bar \/ 16 psi (Optional 1.3 bar)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003eTurbine Housing:\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e8 cm2\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003eMax. Power:\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e480 HP\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4\u003e\n\u003cbr\u003eSpecifications:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eDual Ceramic Ball Bearing\u003c\/li\u003e\n\u003cli\u003eBillet Compressor Wheel\u003c\/li\u003e\n\u003cli\u003eFast Spool\u003c\/li\u003e\n\u003cli\u003eBolt-On\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eKit Contents:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eTurbocharger\u003c\/li\u003e\n\u003cli\u003eGasket\u003c\/li\u003e\n\u003cli\u003eHardware Kit\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eApplications:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e2002 - 2007 Subaru WRX\u003c\/li\u003e\n\u003cli\u003e2004 – 2018 Subaru STi\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWastegate actuator spring choice: 1.1 bar vs 1.3 bar (what customers need to know)\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eWhat the spring actually controls (and why it matters)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOn a pneumatic internal wastegate, the actuator spring sets your gate pressure (often called base boost): the boost level where the wastegate starts to open because boost pressure overcomes spring force. Haltech describes it simply: changing spring pressure changes the default boost pressure, and when boost exceeds spring pressure the valve opens and begins regulating boost.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChoose 1.1 bar (16.1 psi) \/ Red if:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYou want a lower boost map (street\/traction\/valet) around the mid-teens. Remember: you can’t go under the spring.\u003c\/p\u003e\n\u003cp\u003eYour normal target boost is roughly 18–22 psi and you want good controller authority and flexibility.\u003c\/p\u003e\n\u003cp\u003eYou’re building a setup where drivability and multiple boost modes matter (daily + weekend map).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChoose 1.3 bar (19.1 psi) \/ Silver if:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYou will not run low boost—your “low boost” is still ~19 psi or higher. (If you need 15–17 psi sometimes, don’t pick this.)\u003c\/p\u003e\n\u003cp\u003eYour normal target boost is roughly 22–28 psi and you want:\u003c\/p\u003e\n\u003cp\u003eless “work” from the boost control system to hit target, and\u003c\/p\u003e\n\u003cp\u003etypically better resistance to the wastegate being pushed open early (especially in higher load \/ backpressure situations).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThere are two different “maximum boost” questions people ask:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e1) Maximum boost your boost control can hold consistently\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUsing the GFB rule-of-thumb (target boost ≤ ~2× gate pressure) :\u003c\/p\u003e\n\u003cp\u003eWith a 1.1 bar \/ 16.1 psi spring, the “control stability ceiling” is roughly ~32 psi (2 × 16.1).\u003c\/p\u003e\n\u003cp\u003eWith a 1.3 bar \/ 19.1 psi spring, the “control stability ceiling” is roughly ~38 psi (2 × 19.1).\u003c\/p\u003e\n\u003cp\u003eReality check: that does not mean “safe to run 32–38 psi.” It means beyond ~2× gate pressure, boost control tends to get inconsistent because the actuator isn’t receiving enough meaningful reference signal for correction. GFB explains that once you go beyond double, boost control becomes less stable and more affected by variables like RPM\/load\/backpressure.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e2) Maximum boost your turbo\/engine can safely run\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThat’s not spring-limited. It’s limited by:\u003c\/p\u003e\n\u003cp\u003eturbo efficiency and speed\/heat,\u003c\/p\u003e\n\u003cp\u003efuel quality and knock margin,\u003c\/p\u003e\n\u003cp\u003eintake temps\/intercooling,\u003c\/p\u003e\n\u003cp\u003eexhaust backpressure,\u003c\/p\u003e\n\u003cp\u003eengine\/clutch\/trans limits,\u003c\/p\u003e\n\u003cp\u003etuner strategy.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFAQ:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I run less boost than the spring rating?\u003c\/strong\u003e\u003cbr\u003eNo. Spring pressure is the lowest boost level you can reach.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes a stiffer spring automatically mean higher peak boost?\u003c\/strong\u003e\u003cbr\u003eNot automatically. It mainly raises minimum boost and changes how the wastegate behaves. Boost above spring comes from the control strategy.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy do people say “don’t exceed 2× the spring”?\u003c\/strong\u003e\u003cbr\u003eBecause boost control gets less stable as target boost gets too far above gate pressure; beyond ~double you tend to lose correction authority.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat spring gives the best spool and boost stability?\u003c\/strong\u003e\u003cbr\u003eA spring that puts gate pressure about 10–20% under your target boost is a strong general guideline for best performance.\u003cbr\u003e\u003c\/p\u003e","brand":"Tomioka Racing (TR)","offers":[{"title":"1.1 bar","offer_id":52655209775393,"sku":"TR-TS1050","price":1800.0,"currency_code":"USD","in_stock":true},{"title":"1.3 bar","offer_id":52655209808161,"sku":"TR-TS1050","price":1800.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/files\/TR-TS1050_1__web_c634bff8-eaa2-41dd-810f-1f839c515cf4.jpg?v=1778250271"},{"product_id":"tr-td06-20g-jdm-twin-scroll-turbo-kit-for-subaru-wrx-2002-2007-sti-2004-2020","title":"TR TD06-20G JDM Twin Scroll Turbo Kit for Subaru WRX 2002-2007 \u0026 STi 2004-2020","description":"\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"font-size: x-small;\"\u003e** Attention: All of our turbocharger now comes with billet wastegate actuator. The brass wastegate actuator will be phased out. Picture(s) of turbo or turbo kit(s) with the brass wastegate actuator will be replaced as soon as the new picture(s) become available. If you have any questions, please contact us ** \u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eTomioka Racing Twin Scroll Turbo line is catered to the die-hard Subaru fans! The twin scroll turbo is an efficient and economical way to replace or upgrade your current twin scroll setup on your Subaru. Twin Scroll Turbos are increasingly hard to find these days, with the Tomioka Turbo they are a direct bolt-on, featuring equal length twin-scroll downpipe and also boast more boost power than the standard VF series turbo. With TD06 housing and twin-scroll set-up, Tomioka Turbo improves spool time compared to the standard TD06 turbo! \u003cbr\u003e\u003cbr\u003eCheck out the available video and dyno graph on this turbo. \u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eTurbo Characteristics\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable style=\"height: 198.58px;\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\" width=\"500\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.6023px;\"\u003e\n\u003ctd style=\"height: 19.6023px;\" colspan=\"2\" bgcolor=\"#CCCCCC\"\u003eBearing Type:\u003c\/td\u003e\n\u003ctd style=\"height: 19.6023px;\" bgcolor=\"#CCCCCC\"\u003eJournal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6023px;\"\u003e\n\u003ctd style=\"height: 19.6023px;\" colspan=\"2\"\u003eFlange Type:\u003c\/td\u003e\n\u003ctd style=\"height: 19.6023px;\"\u003eSubaru JDM Twin Scroll 5-Bolts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6023px;\"\u003e\n\u003ctd style=\"height: 39.2046px;\" rowspan=\"2\" width=\"100\" bgcolor=\"#CCCCCC\"\u003eCompressor Wheel\u003c\/td\u003e\n\u003ctd style=\"height: 19.6023px;\" width=\"36\" bgcolor=\"#CCCCCC\"\u003eIn:\u003c\/td\u003e\n\u003ctd style=\"height: 19.6023px;\" width=\"364\" bgcolor=\"#CCCCCC\"\u003e51 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6023px;\"\u003e\n\u003ctd style=\"height: 19.6023px;\" bgcolor=\"#CCCCCC\"\u003eEx:\u003c\/td\u003e\n\u003ctd style=\"height: 19.6023px;\" width=\"364\" bgcolor=\"#CCCCCC\"\u003e58 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6023px;\"\u003e\n\u003ctd style=\"height: 39.2046px;\" rowspan=\"2\" height=\"27\"\u003e\n\u003cp\u003eTurbine Wheel\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"height: 19.6023px;\"\u003eIn:\u003c\/td\u003e\n\u003ctd style=\"height: 19.6023px;\"\u003e68 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6023px;\"\u003e\n\u003ctd style=\"height: 19.6023px;\"\u003eEx:\u003c\/td\u003e\n\u003ctd style=\"height: 19.6023px;\"\u003e56 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 26.9886px;\"\u003e\n\u003ctd style=\"height: 26.9886px;\" colspan=\"2\" height=\"27\" bgcolor=\"#CCCCCC\"\u003eActuator:\u003c\/td\u003e\n\u003ctd style=\"height: 26.9886px;\" height=\"27\" bgcolor=\"#CCCCCC\"\u003e1.1 Bar \/ 16 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 26.9886px;\"\u003e\n\u003ctd style=\"height: 26.9886px;\" colspan=\"2\" height=\"27\"\u003eTurbine Housing:\u003c\/td\u003e\n\u003ctd style=\"height: 26.9886px;\" height=\"27\"\u003e8 cm2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 26.9886px;\"\u003e\n\u003ctd style=\"height: 26.9886px;\" colspan=\"2\" height=\"27\" bgcolor=\"#CCCCCC\"\u003eMax. Power:\u003c\/td\u003e\n\u003ctd style=\"height: 26.9886px;\" height=\"27\" bgcolor=\"#CCCCCC\"\u003e500 HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eApplications: (This JDM kit would apply to the following models.)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e2002-2007  WRX\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e2004-2020  STi\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eKit Contents\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e• TR-TS1015 Twin Scroll Turbo\u003cbr\u003e• TR-ES1002 Twin Scroll Exhaust Manifold with 3-Bolt Uppipe\u003cbr\u003e• TR-ES1005 Twin Scroll Downpipe\u003cbr\u003e• Turbo Mounting Bracket\u003cbr\u003e• Hardware kits\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWastegate actuator spring choice: 1.1 bar vs 1.3 bar (what customers need to know)\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eWhat the spring actually controls (and why it matters)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOn a pneumatic internal wastegate, the actuator spring sets your gate pressure (often called base boost): the boost level where the wastegate starts to open because boost pressure overcomes spring force. Haltech describes it simply: changing spring pressure changes the default boost pressure, and when boost exceeds spring pressure the valve opens and begins regulating boost.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChoose 1.1 bar (16.1 psi) \/ Red if:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYou want a lower boost map (street\/traction\/valet) around the mid-teens. Remember: you can’t go under the spring.\u003c\/p\u003e\n\u003cp\u003eYour normal target boost is roughly 18–22 psi and you want good controller authority and flexibility.\u003c\/p\u003e\n\u003cp\u003eYou’re building a setup where drivability and multiple boost modes matter (daily + weekend map).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChoose 1.3 bar (19.1 psi) \/ Silver if:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYou will not run low boost—your “low boost” is still ~19 psi or higher. (If you need 15–17 psi sometimes, don’t pick this.)\u003c\/p\u003e\n\u003cp\u003eYour normal target boost is roughly 22–28 psi and you want:\u003c\/p\u003e\n\u003cp\u003eless “work” from the boost control system to hit target, and\u003c\/p\u003e\n\u003cp\u003etypically better resistance to the wastegate being pushed open early (especially in higher load \/ backpressure situations).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThere are two different “maximum boost” questions people ask:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e1) Maximum boost your boost control can hold consistently\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUsing the GFB rule-of-thumb (target boost ≤ ~2× gate pressure) :\u003c\/p\u003e\n\u003cp\u003eWith a 1.1 bar \/ 16.1 psi spring, the “control stability ceiling” is roughly ~32 psi (2 × 16.1).\u003c\/p\u003e\n\u003cp\u003eWith a 1.3 bar \/ 19.1 psi spring, the “control stability ceiling” is roughly ~38 psi (2 × 19.1).\u003c\/p\u003e\n\u003cp\u003eReality check: that does not mean “safe to run 32–38 psi.” It means beyond ~2× gate pressure, boost control tends to get inconsistent because the actuator isn’t receiving enough meaningful reference signal for correction. GFB explains that once you go beyond double, boost control becomes less stable and more affected by variables like RPM\/load\/backpressure.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e2) Maximum boost your turbo\/engine can safely run\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThat’s not spring-limited. It’s limited by:\u003c\/p\u003e\n\u003cp\u003eturbo efficiency and speed\/heat,\u003c\/p\u003e\n\u003cp\u003efuel quality and knock margin,\u003c\/p\u003e\n\u003cp\u003eintake temps\/intercooling,\u003c\/p\u003e\n\u003cp\u003eexhaust backpressure,\u003c\/p\u003e\n\u003cp\u003eengine\/clutch\/trans limits,\u003c\/p\u003e\n\u003cp\u003etuner strategy.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFAQ:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I run less boost than the spring rating?\u003c\/strong\u003e\u003cbr\u003eNo. Spring pressure is the lowest boost level you can reach.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes a stiffer spring automatically mean higher peak boost?\u003c\/strong\u003e\u003cbr\u003eNot automatically. It mainly raises minimum boost and changes how the wastegate behaves. Boost above spring comes from the control strategy.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy do people say “don’t exceed 2× the spring”?\u003c\/strong\u003e\u003cbr\u003eBecause boost control gets less stable as target boost gets too far above gate pressure; beyond ~double you tend to lose correction authority.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat spring gives the best spool and boost stability?\u003c\/strong\u003e\u003cbr\u003eA spring that puts gate pressure about 10–20% under your target boost is a strong general guideline for best performance.\u003cbr\u003e\u003c\/p\u003e","brand":"Tomioka Racing (TR)","offers":[{"title":"Default Title","offer_id":52655209677089,"sku":"TR-TS1012","price":3235.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/files\/dsc_3500_dd465c79-7de6-4e8e-87cc-6d639ace7327.jpg?v=1778250271"},{"product_id":"tr-td05-20g-turbo-w-billet-wheels-stock-replacement-for-subaru-impreza-wrx-2002-2007-sti-2004-2020","title":"TR TD05-20G Turbo w\/ Billet Wheels Stock Replacement for Subaru Impreza WRX 2002-2007 \u0026 STi 2004-2020","description":"\u003cp\u003eThe popular stock replacement TR TD05-20G turbo now comes in billet wheel. Potentially increasing performance from VF39 and TD04 turbo and at least 10% more efficient than the regular TD05-18G. The billet upgrade has a rating of 400HP, a truly perfect turbo for daily driving Subaru!\u003cbr\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eTurbo Characteristics\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable width=\"500\" cellpadding=\"0\" cellspacing=\"0\" border=\"0\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd bgcolor=\"#CCCCCC\" colspan=\"2\"\u003eBearing Type:\u003c\/td\u003e\n\u003ctd bgcolor=\"#CCCCCC\"\u003eJournal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\"\u003eFlange Type:\u003c\/td\u003e\n\u003ctd\u003eStandard Subaru 5-Bolts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd bgcolor=\"#CCCCCC\" width=\"100\" rowspan=\"2\"\u003eCompressor Wheel\u003c\/td\u003e\n\u003ctd bgcolor=\"#CCCCCC\" width=\"36\"\u003eIn:\u003c\/td\u003e\n\u003ctd bgcolor=\"#CCCCCC\" width=\"364\"\u003e50.3 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd bgcolor=\"#CCCCCC\"\u003eEx:\u003c\/td\u003e\n\u003ctd bgcolor=\"#CCCCCC\" width=\"364\"\u003e68 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd height=\"27\" rowspan=\"2\"\u003e\n\u003cp\u003eTurbine Wheel\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003eIn:\u003c\/td\u003e\n\u003ctd\u003e56 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEx:\u003c\/td\u003e\n\u003ctd\u003e49.2 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd bgcolor=\"#CCCCCC\" height=\"27\" colspan=\"2\"\u003eActuator:\u003c\/td\u003e\n\u003ctd bgcolor=\"#CCCCCC\" height=\"27\"\u003e1.1 Bar \/ 16 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd height=\"27\" colspan=\"2\"\u003eTurbine Housing:\u003c\/td\u003e\n\u003ctd height=\"27\"\u003e8cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd bgcolor=\"#CCCCCC\" height=\"27\" colspan=\"2\"\u003eMax. Power:\u003c\/td\u003e\n\u003ctd bgcolor=\"#CCCCCC\" height=\"27\"\u003e480 HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eApplications:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e2002-2007 WRX\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e2004-2020 STI\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eKit Contents\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 19.600000381469727px;\"\u003eTurbocharger\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 1.4em;\"\u003eGaskets\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 1.4em;\"\u003eActuator\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 1.4em;\"\u003eOil Pipe\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 1.4em;\"\u003eWater Pipe\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 1.4em;\"\u003eHardware Kits\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWastegate actuator spring choice: 1.1 bar vs 1.3 bar (what customers need to know)\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eWhat the spring actually controls (and why it matters)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOn a pneumatic internal wastegate, the actuator spring sets your gate pressure (often called base boost): the boost level where the wastegate starts to open because boost pressure overcomes spring force. Haltech describes it simply: changing spring pressure changes the default boost pressure, and when boost exceeds spring pressure the valve opens and begins regulating boost.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChoose 1.1 bar (16.1 psi) \/ Red if:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYou want a lower boost map (street\/traction\/valet) around the mid-teens. Remember: you can’t go under the spring.\u003c\/p\u003e\n\u003cp\u003eYour normal target boost is roughly 18–22 psi and you want good controller authority and flexibility.\u003c\/p\u003e\n\u003cp\u003eYou’re building a setup where drivability and multiple boost modes matter (daily + weekend map).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChoose 1.3 bar (19.1 psi) \/ Silver if:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYou will not run low boost—your “low boost” is still ~19 psi or higher. (If you need 15–17 psi sometimes, don’t pick this.)\u003c\/p\u003e\n\u003cp\u003eYour normal target boost is roughly 22–28 psi and you want:\u003c\/p\u003e\n\u003cp\u003eless “work” from the boost control system to hit target, and\u003c\/p\u003e\n\u003cp\u003etypically better resistance to the wastegate being pushed open early (especially in higher load \/ backpressure situations).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThere are two different “maximum boost” questions people ask:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e1) Maximum boost your boost control can hold consistently\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUsing the GFB rule-of-thumb (target boost ≤ ~2× gate pressure) :\u003c\/p\u003e\n\u003cp\u003eWith a 1.1 bar \/ 16.1 psi spring, the “control stability ceiling” is roughly ~32 psi (2 × 16.1).\u003c\/p\u003e\n\u003cp\u003eWith a 1.3 bar \/ 19.1 psi spring, the “control stability ceiling” is roughly ~38 psi (2 × 19.1).\u003c\/p\u003e\n\u003cp\u003eReality check: that does not mean “safe to run 32–38 psi.” It means beyond ~2× gate pressure, boost control tends to get inconsistent because the actuator isn’t receiving enough meaningful reference signal for correction. GFB explains that once you go beyond double, boost control becomes less stable and more affected by variables like RPM\/load\/backpressure.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e2) Maximum boost your turbo\/engine can safely run\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThat’s not spring-limited. It’s limited by:\u003c\/p\u003e\n\u003cp\u003eturbo efficiency and speed\/heat,\u003c\/p\u003e\n\u003cp\u003efuel quality and knock margin,\u003c\/p\u003e\n\u003cp\u003eintake temps\/intercooling,\u003c\/p\u003e\n\u003cp\u003eexhaust backpressure,\u003c\/p\u003e\n\u003cp\u003eengine\/clutch\/trans limits,\u003c\/p\u003e\n\u003cp\u003etuner strategy.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFAQ:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I run less boost than the spring rating?\u003c\/strong\u003e\u003cbr\u003eNo. Spring pressure is the lowest boost level you can reach.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes a stiffer spring automatically mean higher peak boost?\u003c\/strong\u003e\u003cbr\u003eNot automatically. It mainly raises minimum boost and changes how the wastegate behaves. Boost above spring comes from the control strategy.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy do people say “don’t exceed 2× the spring”?\u003c\/strong\u003e\u003cbr\u003eBecause boost control gets less stable as target boost gets too far above gate pressure; beyond ~double you tend to lose correction authority.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat spring gives the best spool and boost stability?\u003c\/strong\u003e\u003cbr\u003eA spring that puts gate pressure about 10–20% under your target boost is a strong general guideline for best performance.\u003cbr\u003e\u003c\/p\u003e","brand":"Tomioka Racing (TR)","offers":[{"title":"1.1 bar","offer_id":52655209349409,"sku":"TR-TS1018","price":1570.0,"currency_code":"USD","in_stock":true},{"title":"1.3 bar","offer_id":52655209382177,"sku":"TR-TS1018","price":1570.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/files\/ts1018-1.jpg?v=1778250271"},{"product_id":"tr-gtx2971-ball-bearing-twin-scroll-turbo-kit-stock-replacement-for-subaru-02-07-wrx-04-18-sti","title":"TR GTX2971 Ball-Bearing Twin Scroll Turbo Kit Stock Replacement for Subaru 02-07 WRX \u0026 04-18 STI","description":"\u003cp\u003eNow available for the brand new GTX2971 Twin Scroll Turbo, the TR Equal Length Exhaust Manifold with Up-Pipe and TR Twin Scroll High Flow Catless Downpipe! The perfect combination for a complete twin scroll turbocharged setup for your WRX or STi. Rated up to ~430whp, the twin scroll technology ensures spool speed that is night and day in comparison to single scroll turbos. Thought your turbo spooled fast before? Think again.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis twin scroll edition features a ball-bearing cartridge, billet compressor wheel , and 10\u003c\/span\u003e\u003cspan\u003ecm\u003c\/span\u003e\u003csup\u003e2\u003c\/sup\u003e\u003cspan\u003e housing. Thanks to the billet compressor wheel the overall weight of the wheel is lighter than competing turbochargers and allows for maximum airflow throughout the unit with the help of point milling on each blade. A unique wheel and blade design, featuring a 20% larger wheel with 17% longer blades than the factory turbocharger. In addition, the GTX2971 features a port and polished exhaust housing to minimize exhaust flow turbulence. All hardware is included with purchase.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eCatered to the die-hard Subaru fans! The twin scroll turbo is an efficient way to replace or upgrade your current twin scroll set up on your Subaru. With the rarity of twin-scroll turbo applications, we have created yet another direct bolt-on system, this time for the 2002-2007 WRX and 2004-2018 STi. The GTX2971 is already an efficient turbo but now paired with a complete twin-scroll system, spool time is dramatically decreased!\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe Twin Scroll High Flow Catless Downpipe features larger diameter piping with ported flanges for a quicker and faster exhaust air flow compared to the standard OEM downpipe. Each downpipe is constructed of SUS304 grade stainless steel that gives it shine and durability that will last for years to come. Installation is a snap! The downpipe will fit like your OEM downpipe and comes with all the necessary hardware and gaskets.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe Twin Scroll Equal Length Headers feature a lost wax finish with 3-1 connectors and a smooth inner surface for the best air flow. A stable \u0026amp; effective connection s made by the slip joint bracket and air leakage is avoided by the 3 bolt flange design up-pipe.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAll in all the entire system will bolt together without any issues and make way for quick installation, having all components sit in their stock locations in the engine bay.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eTurbo Specifications:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ctable width=\"603\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd bgcolor=\"#CCCCCC\"\u003e\n\u003cp\u003e\u003cstrong\u003eBearing Type:\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd bgcolor=\"#CCCCCC\"\u003e\n\u003cp\u003eBall-Bearing\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eFlange Type:\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003eStandard Subaru 5-Bolts\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd rowspan=\"2\" bgcolor=\"#CCCCCC\"\u003e\u003cstrong\u003eBillet Compressor Wheel:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bgcolor=\"#CCCCCC\"\u003eIn: 54 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd bgcolor=\"#CCCCCC\"\u003eEx: 72 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd rowspan=\"2\" height=\"27\"\u003e\n\u003cp\u003e\u003cstrong\u003eTurbine Wheel:\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003eIn: 60 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEx: 57 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd bgcolor=\"#CCCCCC\"\u003e\n\u003cp\u003e\u003cstrong\u003eTurbine Housing:\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd bgcolor=\"#CCCCCC\"\u003e\n\u003cp\u003e10cm\u003csup\u003e2\u003c\/sup\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eActuator:\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e1.1 bar \/ 16 psi\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd bgcolor=\"#CCCCCC\"\u003e\n\u003cp\u003e\u003cstrong\u003eHorsepower:\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd bgcolor=\"#CCCCCC\"\u003e\n\u003cp\u003e500 HP\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eDownpipe Specifications:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv class=\"rte__table-wrapper\"\u003e\n\u003ctable width=\"500\" border=\"0\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"173\" height=\"27\" bgcolor=\"#CCCCCC\"\u003eMaterial\u003c\/td\u003e\n\u003ctd width=\"317\" bgcolor=\"#CCCCCC\"\u003eStainless Steel SUS304\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rte__table-wrapper\"\u003e\n\u003ctable width=\"500\" border=\"0\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"173\" height=\"27\"\u003ePipe Thickness\u003c\/td\u003e\n\u003ctd width=\"317\"\u003e0.25 Inch \/ 6.3mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rte__table-wrapper\"\u003e\n\u003ctable width=\"500\" border=\"0\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"173\" height=\"27\" bgcolor=\"#CCCCCC\"\u003eFlange Thickness\u003c\/td\u003e\n\u003ctd width=\"317\" bgcolor=\"#CCCCCC\"\u003e0.5 Inch \/ 12.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eApplications:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e2002 - 2007 Subaru WRX\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e2004 - 2018 Subaru STi\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eKit Contents:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTurbocharger (TR-TS1047)\u003c\/li\u003e\n\u003cli\u003eGaskets\u003c\/li\u003e\n\u003cli\u003eUpgraded Billet Actuator\u003c\/li\u003e\n\u003cli\u003eOil Drain Pipe\u003c\/li\u003e\n\u003cli\u003eWater Pipe\u003c\/li\u003e\n\u003cli\u003eTwin scroll Downpipe (TR-ES1005)\u003c\/li\u003e\n\u003cli\u003eDown pipe to Exhaust Gasket x1 \u003c\/li\u003e\n\u003cli\u003eDown pipe to Exhaust Nuts \u0026amp; Bolts x2\u003c\/li\u003e\n\u003cli\u003eExhaust Manifold (TR-ES1002)\u003c\/li\u003e\n\u003cli\u003eUp Pipe (TR-ES1002)\u003c\/li\u003e\n\u003cli\u003e50' x 2\" Exhaust Wrap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rte__table-wrapper\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"rte__table-wrapper\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"rte__table-wrapper\"\u003e\u003cem\u003e\u003cb\u003eFor Off-Road Use Only\u003c\/b\u003e\u003c\/em\u003e\u003c\/div\u003e\n\u003cdiv class=\"rte__table-wrapper\"\u003e\n\u003cem\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/em\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rte__table-wrapper\"\u003e\n\u003cp\u003e\u003cstrong\u003eWastegate actuator spring choice: 1.1 bar vs 1.3 bar (what customers need to know)\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eWhat the spring actually controls (and why it matters)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOn a pneumatic internal wastegate, the actuator spring sets your gate pressure (often called base boost): the boost level where the wastegate starts to open because boost pressure overcomes spring force. Haltech describes it simply: changing spring pressure changes the default boost pressure, and when boost exceeds spring pressure the valve opens and begins regulating boost.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChoose 1.1 bar (16.1 psi) \/ Red if:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYou want a lower boost map (street\/traction\/valet) around the mid-teens. Remember: you can’t go under the spring.\u003c\/p\u003e\n\u003cp\u003eYour normal target boost is roughly 18–22 psi and you want good controller authority and flexibility.\u003c\/p\u003e\n\u003cp\u003eYou’re building a setup where drivability and multiple boost modes matter (daily + weekend map).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChoose 1.3 bar (19.1 psi) \/ Silver if:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYou will not run low boost—your “low boost” is still ~19 psi or higher. (If you need 15–17 psi sometimes, don’t pick this.)\u003c\/p\u003e\n\u003cp\u003eYour normal target boost is roughly 22–28 psi and you want:\u003c\/p\u003e\n\u003cp\u003eless “work” from the boost control system to hit target, and\u003c\/p\u003e\n\u003cp\u003etypically better resistance to the wastegate being pushed open early (especially in higher load \/ backpressure situations).\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThere are two different “maximum boost” questions people ask:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e1) Maximum boost your boost control can hold consistently\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUsing the GFB rule-of-thumb (target boost ≤ ~2× gate pressure) :\u003c\/p\u003e\n\u003cp\u003eWith a 1.1 bar \/ 16.1 psi spring, the “control stability ceiling” is roughly ~32 psi (2 × 16.1).\u003c\/p\u003e\n\u003cp\u003eWith a 1.3 bar \/ 19.1 psi spring, the “control stability ceiling” is roughly ~38 psi (2 × 19.1).\u003c\/p\u003e\n\u003cp\u003eReality check: that does not mean “safe to run 32–38 psi.” It means beyond ~2× gate pressure, boost control tends to get inconsistent because the actuator isn’t receiving enough meaningful reference signal for correction. GFB explains that once you go beyond double, boost control becomes less stable and more affected by variables like RPM\/load\/backpressure.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e2) Maximum boost your turbo\/engine can safely run\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThat’s not spring-limited. It’s limited by:\u003c\/p\u003e\n\u003cp\u003eturbo efficiency and speed\/heat,\u003c\/p\u003e\n\u003cp\u003efuel quality and knock margin,\u003c\/p\u003e\n\u003cp\u003eintake temps\/intercooling,\u003c\/p\u003e\n\u003cp\u003eexhaust backpressure,\u003c\/p\u003e\n\u003cp\u003eengine\/clutch\/trans limits,\u003c\/p\u003e\n\u003cp\u003etuner strategy.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFAQ:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I run less boost than the spring rating?\u003c\/strong\u003e\u003cbr\u003eNo. Spring pressure is the lowest boost level you can reach.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes a stiffer spring automatically mean higher peak boost?\u003c\/strong\u003e\u003cbr\u003eNot automatically. It mainly raises minimum boost and changes how the wastegate behaves. Boost above spring comes from the control strategy.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy do people say “don’t exceed 2× the spring”?\u003c\/strong\u003e\u003cbr\u003eBecause boost control gets less stable as target boost gets too far above gate pressure; beyond ~double you tend to lose correction authority.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat spring gives the best spool and boost stability?\u003c\/strong\u003e\u003cbr\u003eA spring that puts gate pressure about 10–20% under your target boost is a strong general guideline for best performance.\u003cbr\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Tomioka Racing (TR)","offers":[{"title":"1.1 bar","offer_id":52655210529057,"sku":"TR-TS1100","price":3290.0,"currency_code":"USD","in_stock":true},{"title":"1.3 bar","offer_id":52655210561825,"sku":"TR-TS1100","price":3290.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/files\/TR-TS1100_620x600_6e080a3a-f4ba-4dff-b12c-53b817a986da.jpg?v=1778250276"},{"product_id":"tr-gtx3076-stock-replacement-for-subaru-wrx-02-07-and-sti-04-21","title":"TR GTX3076 Stock Replacement for Subaru WRX 02-07 and STi 04-21","description":"\u003cp\u003eIntroducing the GTX3076! Featuring a ball-bearing cartridge, the GTX3076 allows for exceptionally crisp and strong throttle response paired with faster spooling. Also packed with a billet compressor wheel, the overall weight of the wheel is lighter than other turbocharger wheels and allows for more room for air flow. Thanks to the billet construction of the unique TR blades, durability goes unmatched, keeping the GTX30 running for years to come. New to the TR GTX2971 and GTX3076 turbochargers are point-milled blades,\u003cspan\u003e which allow for reaching in all the small places between the blades to create a surface that provides maximum flow from the wheel design. In addition, the GTX3076 features a port and polished exhaust housing to minimize exhaust flow turbulence. \u003c\/span\u003eThis turbo is perfect for users who are looking for quick spooling and running moderately high boost pressures. All necessary fittings and gaskets are included in the box to make the installation process painless.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ctable width=\"603\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd bgcolor=\"#CCCCCC\"\u003e\n\u003cp\u003e\u003cstrong\u003eBearing Type:\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd bgcolor=\"#CCCCCC\"\u003e\n\u003cp\u003eBall-Bearing\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eFlange Type:\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003eStandard Subaru 5-Bolts\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd rowspan=\"2\" bgcolor=\"#CCCCCC\"\u003e\u003cstrong\u003eCompressor Wheel:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bgcolor=\"#CCCCCC\"\u003eIn: 57 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd bgcolor=\"#CCCCCC\"\u003eEx: 81 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd rowspan=\"2\" height=\"27\"\u003e\n\u003cp\u003e\u003cstrong\u003eTurbine Wheel:\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003eIn: 59 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEx: 53.8 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd bgcolor=\"#CCCCCC\"\u003e\n\u003cp\u003e\u003cstrong\u003eTurbine Housing:\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd bgcolor=\"#CCCCCC\"\u003e\n\u003cp\u003e10cm\u003csup\u003e2\u003c\/sup\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eActuator:\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e1.1 bar \/ 16 psi\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd bgcolor=\"#CCCCCC\"\u003e\n\u003cp\u003e\u003cstrong\u003eHorsepower:\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd bgcolor=\"#CCCCCC\"\u003e\n\u003cp\u003e550 HP\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eApplications:\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e2002 - 2007 Subaru WRX\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e2004 - 2021 Subaru STi\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eKit Contents:\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eTurbocharger\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eGaskets\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eHardware Kit\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eActuator\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eOil Pipe\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eWater Pipe\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWastegate actuator spring choice: 1.1 bar vs 1.3 bar (what customers need to know)\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eWhat the spring actually controls (and why it matters)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOn a pneumatic internal wastegate, the actuator spring sets your gate pressure (often called base boost): the boost level where the wastegate starts to open because boost pressure overcomes spring force. Haltech describes it simply: changing spring pressure changes the default boost pressure, and when boost exceeds spring pressure the valve opens and begins regulating boost.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChoose 1.1 bar (16.1 psi) \/ Red if:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYou want a lower boost map (street\/traction\/valet) around the mid-teens. Remember: you can’t go under the spring.\u003c\/p\u003e\n\u003cp\u003eYour normal target boost is roughly 18–22 psi and you want good controller authority and flexibility.\u003c\/p\u003e\n\u003cp\u003eYou’re building a setup where drivability and multiple boost modes matter (daily + weekend map).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChoose 1.3 bar (19.1 psi) \/ Silver if:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYou will not run low boost—your “low boost” is still ~19 psi or higher. (If you need 15–17 psi sometimes, don’t pick this.)\u003c\/p\u003e\n\u003cp\u003eYour normal target boost is roughly 22–28 psi and you want:\u003c\/p\u003e\n\u003cp\u003eless “work” from the boost control system to hit target, and\u003c\/p\u003e\n\u003cp\u003etypically better resistance to the wastegate being pushed open early (especially in higher load \/ backpressure situations).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThere are two different “maximum boost” questions people ask:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e1) Maximum boost your boost control can hold consistently\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUsing the GFB rule-of-thumb (target boost ≤ ~2× gate pressure) :\u003c\/p\u003e\n\u003cp\u003eWith a 1.1 bar \/ 16.1 psi spring, the “control stability ceiling” is roughly ~32 psi (2 × 16.1).\u003c\/p\u003e\n\u003cp\u003eWith a 1.3 bar \/ 19.1 psi spring, the “control stability ceiling” is roughly ~38 psi (2 × 19.1).\u003c\/p\u003e\n\u003cp\u003eReality check: that does not mean “safe to run 32–38 psi.” It means beyond ~2× gate pressure, boost control tends to get inconsistent because the actuator isn’t receiving enough meaningful reference signal for correction. GFB explains that once you go beyond double, boost control becomes less stable and more affected by variables like RPM\/load\/backpressure.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e2) Maximum boost your turbo\/engine can safely run\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThat’s not spring-limited. It’s limited by:\u003c\/p\u003e\n\u003cp\u003eturbo efficiency and speed\/heat,\u003c\/p\u003e\n\u003cp\u003efuel quality and knock margin,\u003c\/p\u003e\n\u003cp\u003eintake temps\/intercooling,\u003c\/p\u003e\n\u003cp\u003eexhaust backpressure,\u003c\/p\u003e\n\u003cp\u003eengine\/clutch\/trans limits,\u003c\/p\u003e\n\u003cp\u003etuner strategy.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFAQ:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I run less boost than the spring rating?\u003c\/strong\u003e\u003cbr\u003eNo. Spring pressure is the lowest boost level you can reach.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes a stiffer spring automatically mean higher peak boost?\u003c\/strong\u003e\u003cbr\u003eNot automatically. It mainly raises minimum boost and changes how the wastegate behaves. Boost above spring comes from the control strategy.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy do people say “don’t exceed 2× the spring”?\u003c\/strong\u003e\u003cbr\u003eBecause boost control gets less stable as target boost gets too far above gate pressure; beyond ~double you tend to lose correction authority.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat spring gives the best spool and boost stability?\u003c\/strong\u003e\u003cbr\u003eA spring that puts gate pressure about 10–20% under your target boost is a strong general guideline for best performance.\u003c\/p\u003e","brand":"Tomioka Racing (TR)","offers":[{"title":"1.1 bar","offer_id":52655210660129,"sku":"TR-TS1046","price":2280.0,"currency_code":"USD","in_stock":true},{"title":"1.3 bar","offer_id":52655210692897,"sku":"TR-TS1046","price":2280.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/files\/TR-TW1046_Web_Pic.jpg?v=1778250282"},{"product_id":"tr-billet-wheel-td05-16g-turbocharger-stock-replacement-for-subaru-wrx-2002-2007-sti-2004-2020","title":"TR Billet Wheel TD05-16G Turbocharger Stock Replacement for Subaru WRX 2002-2007 \u0026 STI 2004-2020 (TR-TS1024)","description":"\u003cp\u003eOne of the most popular TD05-16G replacement turbocharger now comes in billet compressor wheel. Supersize your mild upgrade from the factory VF turbo. The billet compressor wheel improves air flow by at least 10% over TD05-16G in standard compressor wheel which results in higher horse power capacity. The turbo comes with all fitting and gaskets, ready to bolt on out of the box. The best all around turbo upgrade just got better!\u003c\/p\u003e\n\u003ch3\u003eTurbo Characteristics:\u003c\/h3\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e Type:\u003c\/td\u003e\n\u003ctd\u003eTD05-16G\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBearing:\u003c\/td\u003e\n\u003ctd\u003eJournal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange:\u003c\/td\u003e\n\u003ctd\u003eStandard Subaru 5 Bolt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompressor Diameter:\u003c\/td\u003e\n\u003ctd\u003eInlet = 48.3 mm | Outlet = 68 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTurbine Diameter:\u003c\/td\u003e\n\u003ctd\u003eInlet = 56 mm | Outlet = 49.2 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTurbo Boost:\u003c\/td\u003e\n\u003ctd\u003e1.1 bar \/ 16 PSI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Power:\u003c\/td\u003e\n\u003ctd\u003e400 HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch3\u003e\u003cspan\u003eAPPLICATIONS\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2002-2007 Subaru WRX\u003c\/li\u003e\n\u003cli\u003e2004-2020 Subaru STI\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKit Contents:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eTurbocharger\u003c\/li\u003e\n\u003cli\u003eActuator\u003c\/li\u003e\n\u003cli\u003eOil Pipe\u003c\/li\u003e\n\u003cli\u003eWater Pipe\u003c\/li\u003e\n\u003cli\u003eGaskets \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWastegate actuator spring choice: 1.1 bar vs 1.3 bar (what customers need to know)\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eWhat the spring actually controls (and why it matters)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOn a pneumatic internal wastegate, the actuator spring sets your gate pressure (often called base boost): the boost level where the wastegate starts to open because boost pressure overcomes spring force. Haltech describes it simply: changing spring pressure changes the default boost pressure, and when boost exceeds spring pressure the valve opens and begins regulating boost.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChoose 1.1 bar (16.1 psi) \/ Red if:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYou want a lower boost map (street\/traction\/valet) around the mid-teens. Remember: you can’t go under the spring.\u003c\/p\u003e\n\u003cp\u003eYour normal target boost is roughly 18–22 psi and you want good controller authority and flexibility.\u003c\/p\u003e\n\u003cp\u003eYou’re building a setup where drivability and multiple boost modes matter (daily + weekend map).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChoose 1.3 bar (19.1 psi) \/ Silver if:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYou will not run low boost—your “low boost” is still ~19 psi or higher. (If you need 15–17 psi sometimes, don’t pick this.)\u003c\/p\u003e\n\u003cp\u003eYour normal target boost is roughly 22–28 psi and you want:\u003c\/p\u003e\n\u003cp\u003eless “work” from the boost control system to hit target, and\u003c\/p\u003e\n\u003cp\u003etypically better resistance to the wastegate being pushed open early (especially in higher load \/ backpressure situations).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThere are two different “maximum boost” questions people ask:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e1) Maximum boost your boost control can hold consistently\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUsing the GFB rule-of-thumb (target boost ≤ ~2× gate pressure) :\u003c\/p\u003e\n\u003cp\u003eWith a 1.1 bar \/ 16.1 psi spring, the “control stability ceiling” is roughly ~32 psi (2 × 16.1).\u003c\/p\u003e\n\u003cp\u003eWith a 1.3 bar \/ 19.1 psi spring, the “control stability ceiling” is roughly ~38 psi (2 × 19.1).\u003c\/p\u003e\n\u003cp\u003eReality check: that does not mean “safe to run 32–38 psi.” It means beyond ~2× gate pressure, boost control tends to get inconsistent because the actuator isn’t receiving enough meaningful reference signal for correction. GFB explains that once you go beyond double, boost control becomes less stable and more affected by variables like RPM\/load\/backpressure.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e2) Maximum boost your turbo\/engine can safely run\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThat’s not spring-limited. It’s limited by:\u003c\/p\u003e\n\u003cp\u003eturbo efficiency and speed\/heat,\u003c\/p\u003e\n\u003cp\u003efuel quality and knock margin,\u003c\/p\u003e\n\u003cp\u003eintake temps\/intercooling,\u003c\/p\u003e\n\u003cp\u003eexhaust backpressure,\u003c\/p\u003e\n\u003cp\u003eengine\/clutch\/trans limits,\u003c\/p\u003e\n\u003cp\u003etuner strategy.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFAQ:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I run less boost than the spring rating?\u003c\/strong\u003e\u003cbr\u003eNo. Spring pressure is the lowest boost level you can reach.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes a stiffer spring automatically mean higher peak boost?\u003c\/strong\u003e\u003cbr\u003eNot automatically. It mainly raises minimum boost and changes how the wastegate behaves. Boost above spring comes from the control strategy.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy do people say “don’t exceed 2× the spring”?\u003c\/strong\u003e\u003cbr\u003eBecause boost control gets less stable as target boost gets too far above gate pressure; beyond ~double you tend to lose correction authority.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat spring gives the best spool and boost stability?\u003c\/strong\u003e\u003cbr\u003eA spring that puts gate pressure about 10–20% under your target boost is a strong general guideline for best performance.\u003cbr\u003e\u003c\/p\u003e","brand":"Tomioka Racing (TR)","offers":[{"title":"1.1 bar","offer_id":52655210725665,"sku":"TR-TS1024","price":1265.0,"currency_code":"USD","in_stock":true},{"title":"1.3 bar","offer_id":52655210758433,"sku":"TR-TS1024","price":1265.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/files\/frontforwebdsc_4715_737b4e57-0f21-46e4-b020-a5bde4a9a96c.jpg?v=1778250278"},{"product_id":"tr-gtx2971-stock-location-replacement-for-subaru-wrx-02-07-and-sti-04-21","title":"TR GTX2971 Stock Location Replacement for Subaru WRX 02-07 and STi 04-21","description":"\u003cp\u003eIntroducing the GTX2971! Featuring a ball-bearing cartridge, the GTX2971 allows for exceptionally crisp and strong throttle response just like that of its larger counterpart the GTX3076. Also packed with a billet compressor wheel, the overall weight of the wheel is lighter than other turbocharger wheels and allows for more room for air-flow. Thanks to the billet construction of the unique TR blades, durability goes unmatched, keeping the GTX2971 running through any condition. New to the TR GTX2971 and GTX3076 turbochargers are point-milled blades, which allow for reaching in all the small places between the blades to create a surface that provides maximum flow from the wheel design. In addition, the GTX2971 features a port and polished exhaust housing to minimize exhaust flow turbulence. This turbo is perfect for users who are looking for quick spooling and running moderate boost pressures. All necessary fittings and gaskets are included with purchase.\u003c\/p\u003e\n\u003ctable style=\"height: 297.869px;\" width=\"603\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 35.5966px;\"\u003e\n\u003ctd style=\"width: 149px; height: 35.5966px;\" bgcolor=\"#CCCCCC\"\u003e\n\u003cp\u003e\u003cstrong\u003eBearing Type:\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 149px; height: 35.5966px;\" bgcolor=\"#CCCCCC\"\u003e\n\u003cp\u003eBall-Bearing\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 35.5966px;\"\u003e\n\u003ctd style=\"width: 149px; height: 35.5966px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eFlange Type:\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"height: 35.5966px;\"\u003e\n\u003cp\u003eStandard Subaru 5-Bolts\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 37.6562px;\"\u003e\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6023px;\"\u003e\n\u003ctd style=\"width: 149px; height: 39.2046px;\" bgcolor=\"#CCCCCC\" rowspan=\"2\"\u003e\u003cstrong\u003eCompressor Wheel:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 149px; height: 19.6023px;\" bgcolor=\"#CCCCCC\"\u003eIn: 52.73 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6023px;\"\u003e\n\u003ctd style=\"width: 149px; height: 19.6023px;\" bgcolor=\"#CCCCCC\"\u003eEx: 75 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6023px;\"\u003e\n\u003ctd style=\"width: 149px; height: 39.2046px;\" height=\"27\" rowspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003eTurbine Wheel:\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 192px; height: 19.6023px;\"\u003eIn: 55.63 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6023px;\"\u003e\n\u003ctd style=\"width: 192px; height: 19.6023px;\"\u003eEx: 52.33 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.4176px;\"\u003e\n\u003ctd style=\"width: 149px; height: 39.4176px;\" bgcolor=\"#CCCCCC\"\u003e\n\u003cp\u003e\u003cstrong\u003eTurbine Housing:\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 149px; height: 39.4176px;\" bgcolor=\"#CCCCCC\"\u003e\n\u003cp\u003e10cm\u003csup\u003e2\u003c\/sup\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 35.5966px;\"\u003e\n\u003ctd style=\"width: 149px; height: 35.5966px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eActuator:\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 149px; height: 35.5966px;\"\u003e\n\u003cp\u003e1.1 bar \/ 16 psi\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 35.5966px;\"\u003e\n\u003ctd style=\"width: 149px; height: 35.5966px;\" bgcolor=\"#CCCCCC\"\u003e\n\u003cp\u003e\u003cstrong\u003eHorsepower:\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 149px; height: 35.5966px;\" bgcolor=\"#CCCCCC\"\u003e\n\u003cp\u003e500 HP\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003e\u003cbr\u003eApplications:\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e2002 - 2007 Subaru WRX\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e2004 - 2018 Subaru STi\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eKit Contents:\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003eTurbocharger\u003cbr\u003eGaskets\u003cbr\u003eHardware Kit\u003cbr\u003eActuator\u003cbr\u003eOil Pipe\u003cbr\u003eWater Pipe\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWastegate actuator spring choice: 1.1 bar vs 1.3 bar (what customers need to know)\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eWhat the spring actually controls (and why it matters)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOn a pneumatic internal wastegate, the actuator spring sets your gate pressure (often called base boost): the boost level where the wastegate starts to open because boost pressure overcomes spring force. Haltech describes it simply: changing spring pressure changes the default boost pressure, and when boost exceeds spring pressure the valve opens and begins regulating boost.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChoose 1.1 bar (16.1 psi) \/ Red if:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYou want a lower boost map (street\/traction\/valet) around the mid-teens. Remember: you can’t go under the spring.\u003c\/p\u003e\n\u003cp\u003eYour normal target boost is roughly 18–22 psi and you want good controller authority and flexibility.\u003c\/p\u003e\n\u003cp\u003eYou’re building a setup where drivability and multiple boost modes matter (daily + weekend map).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChoose 1.3 bar (19.1 psi) \/ Silver if:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYou will not run low boost—your “low boost” is still ~19 psi or higher. (If you need 15–17 psi sometimes, don’t pick this.)\u003c\/p\u003e\n\u003cp\u003eYour normal target boost is roughly 22–28 psi and you want:\u003c\/p\u003e\n\u003cp\u003eless “work” from the boost control system to hit target, and\u003c\/p\u003e\n\u003cp\u003etypically better resistance to the wastegate being pushed open early (especially in higher load \/ backpressure situations).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThere are two different “maximum boost” questions people ask:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e1) Maximum boost your boost control can hold consistently\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUsing the GFB rule-of-thumb (target boost ≤ ~2× gate pressure) :\u003c\/p\u003e\n\u003cp\u003eWith a 1.1 bar \/ 16.1 psi spring, the “control stability ceiling” is roughly ~32 psi (2 × 16.1).\u003c\/p\u003e\n\u003cp\u003eWith a 1.3 bar \/ 19.1 psi spring, the “control stability ceiling” is roughly ~38 psi (2 × 19.1).\u003c\/p\u003e\n\u003cp\u003eReality check: that does not mean “safe to run 32–38 psi.” It means beyond ~2× gate pressure, boost control tends to get inconsistent because the actuator isn’t receiving enough meaningful reference signal for correction. GFB explains that once you go beyond double, boost control becomes less stable and more affected by variables like RPM\/load\/backpressure.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e2) Maximum boost your turbo\/engine can safely run\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThat’s not spring-limited. It’s limited by:\u003c\/p\u003e\n\u003cp\u003eturbo efficiency and speed\/heat,\u003c\/p\u003e\n\u003cp\u003efuel quality and knock margin,\u003c\/p\u003e\n\u003cp\u003eintake temps\/intercooling,\u003c\/p\u003e\n\u003cp\u003eexhaust backpressure,\u003c\/p\u003e\n\u003cp\u003eengine\/clutch\/trans limits,\u003c\/p\u003e\n\u003cp\u003etuner strategy.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFAQ:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I run less boost than the spring rating?\u003c\/strong\u003e\u003cbr\u003eNo. Spring pressure is the lowest boost level you can reach.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes a stiffer spring automatically mean higher peak boost?\u003c\/strong\u003e\u003cbr\u003eNot automatically. It mainly raises minimum boost and changes how the wastegate behaves. Boost above spring comes from the control strategy.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy do people say “don’t exceed 2× the spring”?\u003c\/strong\u003e\u003cbr\u003eBecause boost control gets less stable as target boost gets too far above gate pressure; beyond ~double you tend to lose correction authority.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat spring gives the best spool and boost stability?\u003c\/strong\u003e\u003cbr\u003eA spring that puts gate pressure about 10–20% under your target boost is a strong general guideline for best performance.\u003cbr\u003e\u003c\/p\u003e","brand":"Tomioka Racing (TR)","offers":[{"title":"1.1 bar","offer_id":52655211086113,"sku":"TR-TS1045","price":1965.0,"currency_code":"USD","in_stock":true},{"title":"1.3 bar","offer_id":52655211118881,"sku":"TR-TS1045","price":1965.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/files\/TR-TW1045_Web_Pic.jpg?v=1778250279"},{"product_id":"tr-td05-18g-bolt-on-turbo-stock-replacement-for-subaru-wrx-2002-2007-and-sti-2002-2010-w-billet-actuator","title":"TR TD05-18G Bolt On Turbo Stock Replacement for Subaru WRX 2002-2007 and STI 2002-2010 w\/ Billet Actuator (TR-TS1000)","description":"\u003cp\u003eThe TR TD05-18G Turbo is the one of the best turbo upgrade for your street car. The turbo characteristics are very similar to factory VF42 turbo but with an increased spool rate and capacity to handle power upwards of 350WHP so it makes a great addition to your engine if you are planning to keep your car daily driver friendly. The turbo comes with all fitting and gaskets, ready to bolt on out of the box.\u003cspan\u003e \u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eTurbo Characteristics\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable style=\"height: 198.515px;\" width=\"500\" cellpadding=\"0\" cellspacing=\"0\" border=\"0\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5898px;\"\u003e\n\u003ctd style=\"height: 19.5898px;\" bgcolor=\"#CCCCCC\" colspan=\"2\"\u003eBearing Type:\u003c\/td\u003e\n\u003ctd style=\"height: 19.5898px;\" bgcolor=\"#CCCCCC\"\u003eJournal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5898px;\"\u003e\n\u003ctd style=\"height: 19.5898px;\" colspan=\"2\"\u003eFlange Type:\u003c\/td\u003e\n\u003ctd style=\"height: 19.5898px;\"\u003eStandard Subaru 5-Bolts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5898px;\"\u003e\n\u003ctd style=\"height: 39.1796px;\" bgcolor=\"#CCCCCC\" width=\"100\" rowspan=\"2\"\u003eCompressor Wheel\u003c\/td\u003e\n\u003ctd style=\"height: 19.5898px;\" bgcolor=\"#CCCCCC\" width=\"36\"\u003eIn:\u003c\/td\u003e\n\u003ctd style=\"height: 19.5898px;\" bgcolor=\"#CCCCCC\" width=\"364\"\u003e50.3 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5898px;\"\u003e\n\u003ctd style=\"height: 19.5898px;\" bgcolor=\"#CCCCCC\"\u003eEx:\u003c\/td\u003e\n\u003ctd style=\"height: 19.5898px;\" bgcolor=\"#CCCCCC\" width=\"364\"\u003e68 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5898px;\"\u003e\n\u003ctd style=\"height: 39.1796px;\" height=\"27\" rowspan=\"2\"\u003e\n\u003cp\u003eTurbine Wheel\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"height: 19.5898px;\"\u003eIn:\u003c\/td\u003e\n\u003ctd style=\"height: 19.5898px;\"\u003e56 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5898px;\"\u003e\n\u003ctd style=\"height: 19.5898px;\"\u003eEx:\u003c\/td\u003e\n\u003ctd style=\"height: 19.5898px;\"\u003e49.2 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 26.9922px;\"\u003e\n\u003ctd style=\"height: 26.9922px;\" bgcolor=\"#CCCCCC\" height=\"27\" colspan=\"2\"\u003eActuator:\u003c\/td\u003e\n\u003ctd style=\"height: 26.9922px;\" bgcolor=\"#CCCCCC\" height=\"27\"\u003e1.1 Bar \/ 16 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 26.9922px;\"\u003e\n\u003ctd style=\"height: 26.9922px;\" height=\"27\" colspan=\"2\"\u003eTurbine Housing:\u003c\/td\u003e\n\u003ctd style=\"height: 26.9922px;\" height=\"27\"\u003e7 cm2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 26.9922px;\"\u003e\n\u003ctd style=\"height: 26.9922px;\" bgcolor=\"#CCCCCC\" height=\"27\" colspan=\"2\"\u003eMax. Power:\u003c\/td\u003e\n\u003ctd style=\"height: 26.9922px;\" bgcolor=\"#CCCCCC\" height=\"27\"\u003e400 HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eKit Contents\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e• Turbocharger\u003cbr\u003e• Actuator\u003cbr\u003e• Oil Pipe\u003cbr\u003e• Water Pipe\u003cbr\u003e• Gaskets\u003cbr\u003e• Hardware kits\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eApplication: \u003c\/strong\u003eSubaru GDA-GDB WRX\/STI 2002-2015, GC8 1998-2001, Forester SG5 2005-2007\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWastegate actuator spring choice: 1.1 bar vs 1.3 bar (what customers need to know)\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eWhat the spring actually controls (and why it matters)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOn a pneumatic internal wastegate, the actuator spring sets your gate pressure (often called base boost): the boost level where the wastegate starts to open because boost pressure overcomes spring force. Haltech describes it simply: changing spring pressure changes the default boost pressure, and when boost exceeds spring pressure the valve opens and begins regulating boost.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChoose 1.1 bar (16.1 psi) \/ Red if:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYou want a lower boost map (street\/traction\/valet) around the mid-teens. Remember: you can’t go under the spring.\u003c\/p\u003e\n\u003cp\u003eYour normal target boost is roughly 18–22 psi and you want good controller authority and flexibility.\u003c\/p\u003e\n\u003cp\u003eYou’re building a setup where drivability and multiple boost modes matter (daily + weekend map).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChoose 1.3 bar (19.1 psi) \/ Silver if:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYou will not run low boost—your “low boost” is still ~19 psi or higher. (If you need 15–17 psi sometimes, don’t pick this.)\u003c\/p\u003e\n\u003cp\u003eYour normal target boost is roughly 22–28 psi and you want:\u003c\/p\u003e\n\u003cp\u003eless “work” from the boost control system to hit target, and\u003c\/p\u003e\n\u003cp\u003etypically better resistance to the wastegate being pushed open early (especially in higher load \/ backpressure situations).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThere are two different “maximum boost” questions people ask:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e1) Maximum boost your boost control can hold consistently\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUsing the GFB rule-of-thumb (target boost ≤ ~2× gate pressure) :\u003c\/p\u003e\n\u003cp\u003eWith a 1.1 bar \/ 16.1 psi spring, the “control stability ceiling” is roughly ~32 psi (2 × 16.1).\u003c\/p\u003e\n\u003cp\u003eWith a 1.3 bar \/ 19.1 psi spring, the “control stability ceiling” is roughly ~38 psi (2 × 19.1).\u003c\/p\u003e\n\u003cp\u003eReality check: that does not mean “safe to run 32–38 psi.” It means beyond ~2× gate pressure, boost control tends to get inconsistent because the actuator isn’t receiving enough meaningful reference signal for correction. GFB explains that once you go beyond double, boost control becomes less stable and more affected by variables like RPM\/load\/backpressure.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e2) Maximum boost your turbo\/engine can safely run\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThat’s not spring-limited. It’s limited by:\u003c\/p\u003e\n\u003cp\u003eturbo efficiency and speed\/heat,\u003c\/p\u003e\n\u003cp\u003efuel quality and knock margin,\u003c\/p\u003e\n\u003cp\u003eintake temps\/intercooling,\u003c\/p\u003e\n\u003cp\u003eexhaust backpressure,\u003c\/p\u003e\n\u003cp\u003eengine\/clutch\/trans limits,\u003c\/p\u003e\n\u003cp\u003etuner strategy.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFAQ:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I run less boost than the spring rating?\u003c\/strong\u003e\u003cbr\u003eNo. Spring pressure is the lowest boost level you can reach.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes a stiffer spring automatically mean higher peak boost?\u003c\/strong\u003e\u003cbr\u003eNot automatically. It mainly raises minimum boost and changes how the wastegate behaves. Boost above spring comes from the control strategy.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy do people say “don’t exceed 2× the spring”?\u003c\/strong\u003e\u003cbr\u003eBecause boost control gets less stable as target boost gets too far above gate pressure; beyond ~double you tend to lose correction authority.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat spring gives the best spool and boost stability?\u003c\/strong\u003e\u003cbr\u003eA spring that puts gate pressure about 10–20% under your target boost is a strong general guideline for best performance.\u003cbr\u003e\u003c\/p\u003e","brand":"Tomioka Racing (TR)","offers":[{"title":"Default Title","offer_id":52655211020577,"sku":"TR-TS1000","price":1095.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/files\/dsc_137911.jpg?v=1778250279"},{"product_id":"tr-td06-20g-bolt-on-turbo-stock-replacement-for-subaru-wrx-2002-2007-sti-2004-2020","title":"TR TD06-20G Bolt On Turbo Stock Replacement for Subaru WRX 2002-2007 \u0026 STI 2004-2020","description":"\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"font-size: x-small;\"\u003e** Attention: All of our turbocharger now comes with billet wastegate actuator. The brass wastegate actuator will be phased out. Picture(s) of turbo or turbo kit(s) with the brass wastegate actuator will be replaced as soon as the new picture(s) become available. If you have any questions, please contact us ** \u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe TR TD06-20G turbo is designed for the newer models of Subaru with fly-by throttle turbo design. This turbo is made for high-end power while maintaining the bolt on design as much as possible. This turbo can handle 500 HP for all your racing needs. Upgraded engine internals is strongly recommended for this turbo. \u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eApplications:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e2002-2007 WRX\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e2004-2020 STI\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eContents of Kit:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 1.4em;\"\u003eTurbocharger\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 1.4em;\"\u003eActuator\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 1.4em;\"\u003eOil Pipe\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 1.4em;\"\u003eWater Pipe\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 1.4em;\"\u003eGaskets\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 1.4em;\"\u003eHardware kits\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWastegate actuator spring choice: 1.1 bar vs 1.3 bar (what customers need to know)\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eWhat the spring actually controls (and why it matters)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOn a pneumatic internal wastegate, the actuator spring sets your gate pressure (often called base boost): the boost level where the wastegate starts to open because boost pressure overcomes spring force. Haltech describes it simply: changing spring pressure changes the default boost pressure, and when boost exceeds spring pressure the valve opens and begins regulating boost.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChoose 1.1 bar (16.1 psi) \/ Red if:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYou want a lower boost map (street\/traction\/valet) around the mid-teens. Remember: you can’t go under the spring.\u003c\/p\u003e\n\u003cp\u003eYour normal target boost is roughly 18–22 psi and you want good controller authority and flexibility.\u003c\/p\u003e\n\u003cp\u003eYou’re building a setup where drivability and multiple boost modes matter (daily + weekend map).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChoose 1.3 bar (19.1 psi) \/ Silver if:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYou will not run low boost—your “low boost” is still ~19 psi or higher. (If you need 15–17 psi sometimes, don’t pick this.)\u003c\/p\u003e\n\u003cp\u003eYour normal target boost is roughly 22–28 psi and you want:\u003c\/p\u003e\n\u003cp\u003eless “work” from the boost control system to hit target, and\u003c\/p\u003e\n\u003cp\u003etypically better resistance to the wastegate being pushed open early (especially in higher load \/ backpressure situations).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThere are two different “maximum boost” questions people ask:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e1) Maximum boost your boost control can hold consistently\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUsing the GFB rule-of-thumb (target boost ≤ ~2× gate pressure) :\u003c\/p\u003e\n\u003cp\u003eWith a 1.1 bar \/ 16.1 psi spring, the “control stability ceiling” is roughly ~32 psi (2 × 16.1).\u003c\/p\u003e\n\u003cp\u003eWith a 1.3 bar \/ 19.1 psi spring, the “control stability ceiling” is roughly ~38 psi (2 × 19.1).\u003c\/p\u003e\n\u003cp\u003eReality check: that does not mean “safe to run 32–38 psi.” It means beyond ~2× gate pressure, boost control tends to get inconsistent because the actuator isn’t receiving enough meaningful reference signal for correction. GFB explains that once you go beyond double, boost control becomes less stable and more affected by variables like RPM\/load\/backpressure.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e2) Maximum boost your turbo\/engine can safely run\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThat’s not spring-limited. It’s limited by:\u003c\/p\u003e\n\u003cp\u003eturbo efficiency and speed\/heat,\u003c\/p\u003e\n\u003cp\u003efuel quality and knock margin,\u003c\/p\u003e\n\u003cp\u003eintake temps\/intercooling,\u003c\/p\u003e\n\u003cp\u003eexhaust backpressure,\u003c\/p\u003e\n\u003cp\u003eengine\/clutch\/trans limits,\u003c\/p\u003e\n\u003cp\u003etuner strategy.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFAQ:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I run less boost than the spring rating?\u003c\/strong\u003e\u003cbr\u003eNo. Spring pressure is the lowest boost level you can reach.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes a stiffer spring automatically mean higher peak boost?\u003c\/strong\u003e\u003cbr\u003eNot automatically. It mainly raises minimum boost and changes how the wastegate behaves. Boost above spring comes from the control strategy.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy do people say “don’t exceed 2× the spring”?\u003c\/strong\u003e\u003cbr\u003eBecause boost control gets less stable as target boost gets too far above gate pressure; beyond ~double you tend to lose correction authority.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat spring gives the best spool and boost stability?\u003c\/strong\u003e\u003cbr\u003eA spring that puts gate pressure about 10–20% under your target boost is a strong general guideline for best performance.\u003cbr\u003e\u003c\/p\u003e","brand":"Tomioka Racing (TR)","offers":[{"title":"1.1 bar","offer_id":52655211151649,"sku":"TR-TS1008-1.1","price":1550.0,"currency_code":"USD","in_stock":true},{"title":"1.3 bar","offer_id":52655211184417,"sku":"TR-TS1008-1.3","price":1550.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/files\/dsc_4367_front_for_web_6149f3be-a197-4d08-9bd0-b3b4e8980d20.jpg?v=1778250280"},{"product_id":"tr-billet-td05-18g-bolt-on-turbo-stock-replacement-for-subaru-impreza-wrx-2002-2007-sti-2004-2020","title":"TR Billet TD05-18G Bolt On Turbo Stock Replacement for Subaru Impreza WRX 2002-2007 \u0026 STI 2004-2021 (TR-TS1021)","description":"\u003cp\u003eThe TD05-18G turbo is for a street\/track car. The new billet TD05-18G turbo is rated for 450 HP and maintaining street street drivability. With lighter and stronger wheel blades than the TR TD05-20G. This turbo can handle mid to high-end horsepower without significant lag time compared to stock turbo!\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTurbo Characteristics\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable width=\"500\" border=\"0\" cellpadding=\"0\" cellspacing=\"0\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd bgcolor=\"#CCCCCC\" colspan=\"2\"\u003eBearing Type:\u003c\/td\u003e\n\u003ctd bgcolor=\"#CCCCCC\"\u003eJournal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\"\u003eFlange Type:\u003c\/td\u003e\n\u003ctd\u003eStandard Subaru 5-Bolts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"100\" bgcolor=\"#CCCCCC\" rowspan=\"2\"\u003eCompressor Wheel\u003c\/td\u003e\n\u003ctd width=\"36\" bgcolor=\"#CCCCCC\"\u003eIn:\u003c\/td\u003e\n\u003ctd width=\"364\" bgcolor=\"#CCCCCC\"\u003e52.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd bgcolor=\"#CCCCCC\"\u003eEx:\u003c\/td\u003e\n\u003ctd width=\"364\" bgcolor=\"#CCCCCC\"\u003e68 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd height=\"27\" rowspan=\"2\"\u003e\n\u003cp\u003eTurbine Wheel\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003eIn:\u003c\/td\u003e\n\u003ctd\u003e56 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEx:\u003c\/td\u003e\n\u003ctd\u003e49.2 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd height=\"27\" bgcolor=\"#CCCCCC\" colspan=\"2\"\u003eActuator:\u003c\/td\u003e\n\u003ctd height=\"27\" bgcolor=\"#CCCCCC\"\u003e1.1 Bar \/ 16 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd height=\"27\" colspan=\"2\"\u003eTurbine Housing:\u003c\/td\u003e\n\u003ctd height=\"27\"\u003e8cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd height=\"27\" bgcolor=\"#CCCCCC\" colspan=\"2\"\u003eMax. Power:\u003c\/td\u003e\n\u003ctd height=\"27\" bgcolor=\"#CCCCCC\"\u003e440 HP (41lbs\/min)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eApplications:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e2002-2007 Subaru WRX\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e2004-2021 Subaru STI\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eKit Contents\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e•Turbocharger\u003cbr\u003e•Gaskets\u003cbr\u003e•Actuator\u003cbr\u003e•Oil Pipe\u003cbr\u003e•Water Pipe\u003cbr\u003e•Hardware Kits\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWastegate actuator spring choice: 1.1 bar vs 1.3 bar (what customers need to know)\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eWhat the spring actually controls (and why it matters)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOn a pneumatic internal wastegate, the actuator spring sets your gate pressure (often called base boost): the boost level where the wastegate starts to open because boost pressure overcomes spring force. Haltech describes it simply: changing spring pressure changes the default boost pressure, and when boost exceeds spring pressure the valve opens and begins regulating boost.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChoose 1.1 bar (16.1 psi) \/ Red if:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYou want a lower boost map (street\/traction\/valet) around the mid-teens. Remember: you can’t go under the spring.\u003c\/p\u003e\n\u003cp\u003eYour normal target boost is roughly 18–22 psi and you want good controller authority and flexibility.\u003c\/p\u003e\n\u003cp\u003eYou’re building a setup where drivability and multiple boost modes matter (daily + weekend map).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChoose 1.3 bar (19.1 psi) \/ Silver if:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYou will not run low boost—your “low boost” is still ~19 psi or higher. (If you need 15–17 psi sometimes, don’t pick this.)\u003c\/p\u003e\n\u003cp\u003eYour normal target boost is roughly 22–28 psi and you want:\u003c\/p\u003e\n\u003cp\u003eless “work” from the boost control system to hit target, and\u003c\/p\u003e\n\u003cp\u003etypically better resistance to the wastegate being pushed open early (especially in higher load \/ backpressure situations).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThere are two different “maximum boost” questions people ask:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e1) Maximum boost your boost control can hold consistently\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUsing the GFB rule-of-thumb (target boost ≤ ~2× gate pressure) :\u003c\/p\u003e\n\u003cp\u003eWith a 1.1 bar \/ 16.1 psi spring, the “control stability ceiling” is roughly ~32 psi (2 × 16.1).\u003c\/p\u003e\n\u003cp\u003eWith a 1.3 bar \/ 19.1 psi spring, the “control stability ceiling” is roughly ~38 psi (2 × 19.1).\u003c\/p\u003e\n\u003cp\u003eReality check: that does not mean “safe to run 32–38 psi.” It means beyond ~2× gate pressure, boost control tends to get inconsistent because the actuator isn’t receiving enough meaningful reference signal for correction. GFB explains that once you go beyond double, boost control becomes less stable and more affected by variables like RPM\/load\/backpressure.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e2) Maximum boost your turbo\/engine can safely run\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThat’s not spring-limited. It’s limited by:\u003c\/p\u003e\n\u003cp\u003eturbo efficiency and speed\/heat,\u003c\/p\u003e\n\u003cp\u003efuel quality and knock margin,\u003c\/p\u003e\n\u003cp\u003eintake temps\/intercooling,\u003c\/p\u003e\n\u003cp\u003eexhaust backpressure,\u003c\/p\u003e\n\u003cp\u003eengine\/clutch\/trans limits,\u003c\/p\u003e\n\u003cp\u003etuner strategy.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFAQ:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I run less boost than the spring rating?\u003c\/strong\u003e\u003cbr\u003eNo. Spring pressure is the lowest boost level you can reach.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes a stiffer spring automatically mean higher peak boost?\u003c\/strong\u003e\u003cbr\u003eNot automatically. It mainly raises minimum boost and changes how the wastegate behaves. Boost above spring comes from the control strategy.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy do people say “don’t exceed 2× the spring”?\u003c\/strong\u003e\u003cbr\u003eBecause boost control gets less stable as target boost gets too far above gate pressure; beyond ~double you tend to lose correction authority.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat spring gives the best spool and boost stability?\u003c\/strong\u003e\u003cbr\u003eA spring that puts gate pressure about 10–20% under your target boost is a strong general guideline for best performance.\u003c\/p\u003e","brand":"Tomioka Racing (TR)","offers":[{"title":"1.1 bar","offer_id":52655211315489,"sku":"TR-TS1021","price":1265.0,"currency_code":"USD","in_stock":true},{"title":"1.3 bar","offer_id":52655211348257,"sku":"TR-TS1021","price":1265.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/files\/TR-TS1021_1__620x600_96934fd3-4d6e-47bd-89bc-7be56fe77eef.jpg?v=1778250284"},{"product_id":"tr-td06-20g-billet-wheel-twin-scroll-bolt-on-turbo-stock-replacement-for-subaru-wrx-2002-2007-sti-2004-2020","title":"TR TD06-20G Billet Wheel Twin Scroll Bolt On Turbo Stock Replacement for Subaru WRX 2002-2007 \u0026 STI 2004-2020","description":"\u003cp\u003eTomioka Racing TD06-20G Twin Scroll Turbo now comes in Billet compressor wheel! The billet material improves air flow and performance by at least 10% over standard wheel. This turbo is ideal if you’re looking to put down the highest amount of horsepower without having to convert to a rotated mount set up and maintaining fast spool. This turbo is 100% bolt-on* and will support 550HP. Perfect for track and street applications!\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTurbo Characteristics\u003c\/strong\u003e \u003cbr\u003e\u003c\/p\u003e\n\u003ctable width=\"500\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" bgcolor=\"#CCCCCC\" style=\"width: 150.923px;\"\u003eModel\u003c\/td\u003e\n\u003ctd bgcolor=\"#CCCCCC\" style=\"width: 403.281px;\"\u003eTD06-20G\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" style=\"width: 150.923px;\"\u003ePart Number\u003c\/td\u003e\n\u003ctd style=\"width: 403.281px;\"\u003eTR-TS1027\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" bgcolor=\"#CCCCCC\" style=\"width: 150.923px;\"\u003e\u003cspan class=\"style3\"\u003eBearing \u003c\/span\u003e\u003c\/td\u003e\n\u003ctd bgcolor=\"#CCCCCC\" style=\"width: 403.281px;\"\u003e\u003cspan class=\"style3\"\u003eJournal\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" style=\"width: 150.923px;\"\u003eFlange\u003c\/td\u003e\n\u003ctd style=\"width: 403.281px;\"\u003eSTD Subaru 5 Bolt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd bgcolor=\"#CCCCCC\" colspan=\"2\" style=\"width: 150.923px;\"\u003eActuator\u003c\/td\u003e\n\u003ctd bgcolor=\"#CCCCCC\" style=\"width: 403.281px;\"\u003e1.1 BAR \/ 16 PSI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"100\" rowspan=\"2\" style=\"width: 110.895px;\"\u003eCompressor Wheel\u003c\/td\u003e\n\u003ctd width=\"36\" style=\"width: 40.0284px;\"\u003eIn:\u003c\/td\u003e\n\u003ctd width=\"364\" style=\"width: 403.281px;\"\u003e52 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 40.0284px;\"\u003eEx:\u003c\/td\u003e\n\u003ctd width=\"364\" style=\"width: 403.281px;\"\u003e68 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd bgcolor=\"#CCCCCC\" height=\"27\" rowspan=\"2\" style=\"width: 110.895px;\"\u003e\n\u003cp\u003eTurbine Wheel\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd bgcolor=\"#CCCCCC\" style=\"width: 40.0284px;\"\u003eIn:\u003c\/td\u003e\n\u003ctd bgcolor=\"#CCCCCC\" style=\"width: 403.281px;\"\u003e61 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd bgcolor=\"#CCCCCC\" style=\"width: 40.0284px;\"\u003eEx:\u003c\/td\u003e\n\u003ctd bgcolor=\"#CCCCCC\" style=\"width: 403.281px;\"\u003e54 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd height=\"27\" colspan=\"2\" style=\"width: 150.923px;\"\u003eMaximum Power\u003c\/td\u003e\n\u003ctd height=\"27\" style=\"width: 403.281px;\"\u003e530 HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd bgcolor=\"#CCCCCC\" height=\"27\" colspan=\"2\" style=\"width: 150.923px;\"\u003eTurbine Housing\u003c\/td\u003e\n\u003ctd bgcolor=\"#CCCCCC\" height=\"27\" style=\"width: 403.281px;\"\u003e8 cm2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd height=\"27\" colspan=\"2\" style=\"width: 150.923px;\"\u003eAir Flow Rate\u003c\/td\u003e\n\u003ctd height=\"27\" style=\"width: 403.281px;\"\u003e640 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eTR-TS1047 Twin Scroll GTX2971\u003c\/th\u003e\n\u003cth\u003eTR-TS1027 Tomioka Racing TD06-20G Billet\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003e2002-2007 WRX, 2004-2018 STi\u003c\/td\u003e\n\u003ctd\u003e2002-2007 WRX, 2004-2020 STI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBearing Type\u003c\/td\u003e\n\u003ctd\u003eBall-Bearing\u003c\/td\u003e\n\u003ctd\u003eJournal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompressor Wheel Material\u003c\/td\u003e\n\u003ctd\u003eBillet\u003c\/td\u003e\n\u003ctd\u003eBillet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompressor Wheel Size (mm)\u003c\/td\u003e\n\u003ctd\u003eIn: 54, Ex: 72\u003c\/td\u003e\n\u003ctd\u003eIn: 52, Ex: 68\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTurbine Wheel Size (mm)\u003c\/td\u003e\n\u003ctd\u003eIn: 60, Ex: 57\u003c\/td\u003e\n\u003ctd\u003eIn: 61, Ex: 54\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTurbine Housing Size\u003c\/td\u003e\n\u003ctd\u003e10cm2\u003c\/td\u003e\n\u003ctd\u003e8cm2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight of Compressor Wheel\u003c\/td\u003e\n\u003ctd\u003eLighter than competing turbos\u003c\/td\u003e\n\u003ctd\u003e10% improvement over standard wheel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWheel and Blade Design\u003c\/td\u003e\n\u003ctd\u003e20% larger wheel, 17% longer blades\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExhaust Housing\u003c\/td\u003e\n\u003ctd\u003ePort and polished to minimize turbulence\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Horsepower Support\u003c\/td\u003e\n\u003ctd\u003e550 HP\u003c\/td\u003e\n\u003ctd\u003e530 HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpool Characteristics\u003c\/td\u003e\n\u003ctd\u003eTwin-scroll design for optimal spooling\u003c\/td\u003e\n\u003ctd\u003eFast spool, ideal for maintaining high HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstallation\u003c\/td\u003e\n\u003ctd\u003eRequires twin-scroll headers and downpipe\u003c\/td\u003e\n\u003ctd\u003e100% bolt-on\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eApplications:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e2002-2007 WRX\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e2004-2020 STI\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKit Contents:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 1.4em;\"\u003eTurbocharger \u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 1.4em;\"\u003eActuator \u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 1.4em;\"\u003eOil \u0026amp; Water Pipe \u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 1.4em;\"\u003eGaskets \u0026amp; Hardware Kits\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWastegate actuator spring choice: 1.1 bar vs 1.3 bar (what customers need to know)\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eWhat the spring actually controls (and why it matters)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOn a pneumatic internal wastegate, the actuator spring sets your gate pressure (often called base boost): the boost level where the wastegate starts to open because boost pressure overcomes spring force. Haltech describes it simply: changing spring pressure changes the default boost pressure, and when boost exceeds spring pressure the valve opens and begins regulating boost.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChoose 1.1 bar (16.1 psi) \/ Red if:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYou want a lower boost map (street\/traction\/valet) around the mid-teens. Remember: you can’t go under the spring.\u003c\/p\u003e\n\u003cp\u003eYour normal target boost is roughly 18–22 psi and you want good controller authority and flexibility.\u003c\/p\u003e\n\u003cp\u003eYou’re building a setup where drivability and multiple boost modes matter (daily + weekend map).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChoose 1.3 bar (19.1 psi) \/ Silver if:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYou will not run low boost—your “low boost” is still ~19 psi or higher. (If you need 15–17 psi sometimes, don’t pick this.)\u003c\/p\u003e\n\u003cp\u003eYour normal target boost is roughly 22–28 psi and you want:\u003c\/p\u003e\n\u003cp\u003eless “work” from the boost control system to hit target, and\u003c\/p\u003e\n\u003cp\u003etypically better resistance to the wastegate being pushed open early (especially in higher load \/ backpressure situations).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThere are two different “maximum boost” questions people ask:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e1) Maximum boost your boost control can hold consistently\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUsing the GFB rule-of-thumb (target boost ≤ ~2× gate pressure) :\u003c\/p\u003e\n\u003cp\u003eWith a 1.1 bar \/ 16.1 psi spring, the “control stability ceiling” is roughly ~32 psi (2 × 16.1).\u003c\/p\u003e\n\u003cp\u003eWith a 1.3 bar \/ 19.1 psi spring, the “control stability ceiling” is roughly ~38 psi (2 × 19.1).\u003c\/p\u003e\n\u003cp\u003eReality check: that does not mean “safe to run 32–38 psi.” It means beyond ~2× gate pressure, boost control tends to get inconsistent because the actuator isn’t receiving enough meaningful reference signal for correction. GFB explains that once you go beyond double, boost control becomes less stable and more affected by variables like RPM\/load\/backpressure.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e2) Maximum boost your turbo\/engine can safely run\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThat’s not spring-limited. It’s limited by:\u003c\/p\u003e\n\u003cp\u003eturbo efficiency and speed\/heat,\u003c\/p\u003e\n\u003cp\u003efuel quality and knock margin,\u003c\/p\u003e\n\u003cp\u003eintake temps\/intercooling,\u003c\/p\u003e\n\u003cp\u003eexhaust backpressure,\u003c\/p\u003e\n\u003cp\u003eengine\/clutch\/trans limits,\u003c\/p\u003e\n\u003cp\u003etuner strategy.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFAQ:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I run less boost than the spring rating?\u003c\/strong\u003e\u003cbr\u003eNo. Spring pressure is the lowest boost level you can reach.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes a stiffer spring automatically mean higher peak boost?\u003c\/strong\u003e\u003cbr\u003eNot automatically. It mainly raises minimum boost and changes how the wastegate behaves. Boost above spring comes from the control strategy.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy do people say “don’t exceed 2× the spring”?\u003c\/strong\u003e\u003cbr\u003eBecause boost control gets less stable as target boost gets too far above gate pressure; beyond ~double you tend to lose correction authority.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat spring gives the best spool and boost stability?\u003c\/strong\u003e\u003cbr\u003eA spring that puts gate pressure about 10–20% under your target boost is a strong general guideline for best performance.\u003cbr\u003e\u003c\/p\u003e","brand":"Tomioka Racing (TR)","offers":[{"title":"1.1 bar","offer_id":52655211446561,"sku":"TR-TS1027","price":1750.0,"currency_code":"USD","in_stock":true},{"title":"1.3 bar","offer_id":52655211479329,"sku":"TR-TS1027","price":1750.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/files\/dsc_4035_tr1027_for_web.jpg?v=1778250284"},{"product_id":"dos-performance-70-turbo-2002-2007-subaru-wrx-2004-2021-subaru-sti-2004-2008-subaru-forester-xt","title":"DOS Performance 70 Turbo - 2002-2007 Subaru WRX \/ 2004-2021 Subaru STI \/ 2004-2008 Subaru Forester XT","description":"\u003ch4\u003e\u003cstrong\u003eStock Location Power, Rotated-Setup Flow\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe DOS Performance 70 Turbo is built for EJ-platform Subaru owners who want serious power without giving up the drivability of a stock location setup. Rated to flow 70 lbs per minute and support up to 700 hp, the DOS 70 delivers boost characteristics that feel familiar off idle and pull hard all the way to redline. It was co-developed with Blouch Performance Turbo, one of the most respected names in forced induction for the EJ platform, and the result is a turbo that performs like it was engineered specifically for your car. Because it was.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eEngineering Built Around the EJ Platform\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe DOS 70 uses a 58mm compressor wheel designed to operate at high pressure ratios and high shaft speeds. This is not a generic billet wheel. it was spec'd specifically to outflow any stock location turbo on the EJ platform while maintaining the spool characteristics Subaru owners expect. The turbine side runs a 60mm exducer inconel 713c wheel, an alloy chosen for its combination of low mass and high temperature durability. The 0.73 A\/R exhaust housing was selected to balance spool speed with top-end flow, and the result is a turbo that responds quickly without sacrificing power potential at higher RPM.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/images.squarespace-cdn.com\/content\/v1\/67293eda5d64c73c51b2c20b\/1f81d095-1635-48f7-af19-b3ed588a6c66\/Dec%252B20%252B2024%252B%2525287%252529.jpg?format=1000w\" alt=\"DOS 70 Turbo compressor and turbine spec chart\" style=\"max-width: 100%; height: auto; display: block; margin: 16px 0;\"\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eCeramic Ball Bearing Center Section\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe center rotating assembly runs dual ceramic ball bearings with metal cages. Compared to traditional journal bearings, this setup reduces friction at startup, speeds up spool, and extends bearing life under sustained high-boost conditions. Metal-caged ceramic bearings are also more resistant to the heat cycling and oil contamination that shortened the life of older turbo designs. The DOS 70 is built to last in a daily-driven high-performance application, not just on the dyno.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/images.squarespace-cdn.com\/content\/v1\/67293eda5d64c73c51b2c20b\/74b3cdfc-80ee-461d-8173-42d743d440f2\/Dec%2B20%2B2024%2B%25281%2529.jpg?format=1000w\" alt=\"DOS 70 Turbo center section detail\" style=\"max-width: 100%; height: auto; display: block; margin: 16px 0;\"\u003e \u003cbr\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eAltitude-Ready Efficiency\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe DOS 70 was designed with altitude performance as a primary engineering objective. Its compressor map covers a wide range of air density conditions, meaning the turbo performs consistently whether you are at sea level or several thousand feet up. For Subaru owners in the Rocky Mountain region or anyone who regularly drives at elevation, this matters. Most turbos that are optimized for peak sea-level power fall off noticeably at altitude. The DOS 70 does not.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/images.squarespace-cdn.com\/content\/v1\/67293eda5d64c73c51b2c20b\/1e78cd14-7531-4b3e-89c6-9259bdd84473\/Dec%2B20%2B2024%2B%25282%2529.jpg?format=1000w\" alt=\"DOS 70 Turbo installed view\" style=\"max-width: 100%; height: auto; display: block; margin: 16px 0;\"\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eKey Specifications\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eFlow rating: 70 lbs\/min\u003c\/li\u003e\n\u003cli\u003ePower support: up to 700 hp\u003c\/li\u003e\n\u003cli\u003eCompressor wheel: 58mm, high pressure ratio design\u003c\/li\u003e\n\u003cli\u003eTurbine wheel: 60mm exducer, inconel 713c alloy\u003c\/li\u003e\n\u003cli\u003eExhaust housing: 0.73 A\/R\u003c\/li\u003e\n\u003cli\u003eBearing type: dual ceramic ball bearings, metal caged\u003c\/li\u003e\n\u003cli\u003eCo-developed with Blouch Performance Turbo\u003c\/li\u003e\n\u003cli\u003eFitment: 2002-2007 Subaru WRX, 2004-2021 Subaru STI, 2004-2008 Subaru Forester XT\u003c\/li\u003e\n\u003cli\u003eStock location direct replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/images.squarespace-cdn.com\/content\/v1\/67293eda5d64c73c51b2c20b\/6d33b630-82e3-4938-ae3f-0ab4e94e2049\/Dec%252B20%252B2024%252B%2525283%252529.jpg?format=1000w\" alt=\"DOS 70 Turbo product shot\" style=\"max-width: 100%; height: auto; display: block; margin: 16px 0;\"\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eStraight From Subispeed\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe DOS 70 sits in a spot that is genuinely hard to fill on the EJ platform. There are plenty of turbos that spool fast, and plenty that make big power, but finding one that does both in a stock location is a short list. DOS Performance built this in collaboration with Blouch specifically because that gap existed, and the spec sheet backs it up. If you are building a 500-700 hp EJ street car and want to keep the turbo in the stock location, this is the one we point people to.\u003c\/p\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg src=\"https:\/\/images.squarespace-cdn.com\/content\/v1\/67293eda5d64c73c51b2c20b\/577efe2d-1ee9-45e2-95af-1223ab03c88f\/Dec+20+2024.jpg?format=1000w\" alt=\"DOS Performance 70 Turbo\" style=\"margin-top: 16px; margin-bottom: 16px; float: left;\"\u003e\u003c\/div\u003e","brand":"DOS Performance","offers":[{"title":"Default Title","offer_id":52773592498465,"sku":"DOS70","price":2700.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/files\/Dec_20_2024.webp?v=1779916297"},{"product_id":"dos-performance-75-turbo-2002-2007-subaru-wrx-2004-2021-subaru-sti-2004-2008-subaru-forester-xt","title":"DOS Performance 75 Turbo - 2002-2007 Subaru WRX \/ 2004-2021 Subaru STI \/ 2004-2008 Subaru Forester XT","description":"\u003ch4\u003e\u003cstrong\u003eThe 75 lb\/min Stock Location Solution for the EJ Platform\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe DOS Performance 75 Turbo is the next step up in the DOS lineup, rated to flow 75 lbs per minute and support up to 750 crank hp. Like the DOS 70, it was co-developed with Blouch Performance Turbo and built specifically for the EJ platform in a true stock location configuration. The spool characteristics are tuned to feel responsive in street driving, while the flow ceiling opens up power levels that typically require a rotated setup. For a high-output street or track EJ build that needs to stay stock location, the DOS 75 is the most capable turbo in this format on the market.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/images.squarespace-cdn.com\/content\/v1\/67293eda5d64c73c51b2c20b\/b421c8e0-34c6-42c5-8fd6-38a028469b1f\/Dos+75+Dyno+Chart.PNG?format=1000w\" alt=\"DOS 75 Turbo dyno chart\" style=\"max-width: 100%; height: auto; display: block; margin: 16px 0;\"\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eWhat the Dyno Chart Shows\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe dyno chart above is the most honest thing DOS Performance can put in front of you. The DOS 75 pulls hard across the entire power band, with strong mid-range torque and a top-end that keeps building where most stock-location turbos run out of breath. The curve is smooth and consistent, which matters as much for drivability as for peak numbers. A turbo that comes on like a light switch is fast on paper and exhausting to drive. The DOS 75 is not that turbo.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/images.squarespace-cdn.com\/content\/v1\/67293eda5d64c73c51b2c20b\/6d33b630-82e3-4938-ae3f-0ab4e94e2049\/Dec%252B20%252B2024%252B%2525283%252529.jpg?format=1000w\" alt=\"DOS 75 Turbo compressor map\" style=\"max-width: 100%; height: auto; display: block; margin: 16px 0;\"\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003e64mm Exducer Turbine, Purpose-Built Compressor\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe DOS 75 runs a 64mm exducer inconel 713c turbine wheel, four millimeters larger than the DOS 70. That extra size is what moves the flow rating from 70 to 75 lbs per minute and pushes the power ceiling to 750 crank hp. The 58mm compressor wheel is designed to operate at high pressure ratios and high shaft speeds, spec'd specifically to outflow any competing stock location turbo on the EJ platform. The 0.73 A\/R exhaust housing keeps the system balanced between spool response and top-end flow.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/images.squarespace-cdn.com\/content\/v1\/67293eda5d64c73c51b2c20b\/b6dd825b-b18c-4b3c-8635-1e43261e5521\/DosTurbos-2.jpg?format=1000w\" alt=\"DOS 75 Turbo compressor and turbine detail\" style=\"max-width: 100%; height: auto; display: block; margin: 16px 0;\"\u003e \u003cbr\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eDual Ceramic Ball Bearing Center Section\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe center rotating assembly uses the same dual ceramic ball bearing design with metal cages as the rest of the DOS lineup. The ceramic bearings reduce friction at all RPM ranges, improve spool response, and hold up better under the thermal cycling that kills traditional journal bearings in high-performance applications. Combined with the inconel turbine wheel, the DOS 75 is built to take sustained abuse and keep performing.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/images.squarespace-cdn.com\/content\/v1\/67293eda5d64c73c51b2c20b\/f58524f0-ef92-464b-9710-c8ebe5ae22e0\/DosTurbos-3.jpg?format=1000w\" alt=\"DOS 75 Turbo bearing assembly\" style=\"max-width: 100%; height: auto; display: block; margin: 16px 0;\"\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eKey Specifications\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eFlow rating: 75 lbs\/min\u003c\/li\u003e\n\u003cli\u003ePower support: up to 750 crank hp\u003c\/li\u003e\n\u003cli\u003eCompressor wheel: 58mm, high pressure ratio design\u003c\/li\u003e\n\u003cli\u003eTurbine wheel: 64mm exducer, inconel 713c alloy\u003c\/li\u003e\n\u003cli\u003eExhaust housing: 0.73 A\/R\u003c\/li\u003e\n\u003cli\u003eBearing type: dual ceramic ball bearings, metal caged\u003c\/li\u003e\n\u003cli\u003eCo-developed with Blouch Performance Turbo\u003c\/li\u003e\n\u003cli\u003eFitment: 2002-2007 Subaru WRX, 2004-2021 Subaru STI, 2004-2008 Subaru Forester XT\u003c\/li\u003e\n\u003cli\u003eStock location direct replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/images.squarespace-cdn.com\/content\/v1\/67293eda5d64c73c51b2c20b\/4a3c318c-4475-4639-8cb0-1427464aea2a\/Dec%2B20%2B2024%2B%25285%2529.jpg?format=1000w\" alt=\"DOS 75 Turbo flow chart\" style=\"max-width: 100%; height: auto; display: block; margin: 16px 0;\"\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eStraight From Subispeed\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe DOS 75 is where you go when the DOS 70 is not quite enough and you are not ready to commit to a rotated setup. That 750 crank hp ceiling covers most serious street and track builds on the EJ platform, and keeping it in the stock location means less fabrication, better hood clearance, and a cleaner engine bay. The dyno chart tells the real story here. Pull it up and look at the torque curve. That mid-range delivery is what separates a turbo that is fast everywhere from one that is only fast at the top.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"DOS Performance","offers":[{"title":"Default Title","offer_id":52773592564001,"sku":"DOS75","price":2800.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/files\/DosTurbos-1.jpg?v=1779916300"},{"product_id":"dos-performance-100-turbo-2002-2007-subaru-wrx-2004-2021-subaru-sti-2004-2008-subaru-forester-xt","title":"DOS Performance 100 Turbo - 2002-2007 Subaru WRX \/ 2004-2021 Subaru STI \/ 2004-2008 Subaru Forester XT","description":"\u003ch4\u003e\u003cstrong\u003e1,000 Crank HP from a Stock Location. That is Not a Typo.\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe DOS Performance 100 Turbo is the most capable stock location turbo built for the EJ platform, full stop. Rated to flow 100 lbs per minute and support 1,000 crank hp or 800 wheel hp, the DOS 100 pushes into power territory that most Subaru owners assumed required a full rotated setup. It was co-developed with Blouch Performance Turbo using the same engineering principles behind the DOS 70 and 75, scaled up to a level that makes it the most powerful stock location turbo on the market for the EJ.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eThe Compressor and Turbine That Make 1,000 hp Possible\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eGetting to 100 lbs per minute of flow in a stock location housing required a significant step up in both compressor and turbine sizing. The DOS 100 runs a 68mm compressor wheel designed specifically to operate at the high pressure ratios and shaft speeds required to hit that flow number without compromising spool. On the turbine side, the 74mm exducer inconel 713c wheel is the largest in the DOS lineup, providing the exhaust gas handling capacity to support 1,000 crank hp. The 0.73 A\/R exhaust housing keeps the system balanced, though at this power level the turbo is doing work that few people expected was possible without going rotated.\u003c\/p\u003e\n\u003cp\u003e \u003cimg src=\"https:\/\/images.squarespace-cdn.com\/content\/v1\/67293eda5d64c73c51b2c20b\/806e0072-4941-4a17-a746-3bc84e0518da\/Dos100andshop-3.jpg?format=1000w\" alt=\"DOS 100 Turbo turbine side\" style=\"max-width: 100%; height: auto; display: block; margin: 16px 0;\"\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eCeramic Ball Bearings, Inconel Construction\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe center rotating assembly runs the same dual ceramic ball bearing design with metal cages used across the DOS lineup. At 1,000 crank hp the center section is under more stress than at any other power level in the lineup, and the ceramic bearing design holds up better under sustained high-boost, high-temperature conditions than traditional journal bearings. The inconel 713c turbine wheel is specified for both its low mass and its resistance to the extreme exhaust temperatures generated at this power level.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/images.squarespace-cdn.com\/content\/v1\/67293eda5d64c73c51b2c20b\/6cd2cd1c-93ec-4bee-9d89-f469bc0649df\/Dos100andshop-7.jpg?format=1000w\" alt=\"DOS 100 Turbo installed\" style=\"max-width: 100%; height: auto; display: block; margin: 16px 0;\"\u003e \u003cbr\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eKey Specifications\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eFlow rating: 100 lbs\/min\u003c\/li\u003e\n\u003cli\u003ePower support: up to 1,000 crank hp \/ 800 whp\u003c\/li\u003e\n\u003cli\u003eCompressor wheel: 68mm, high pressure ratio design\u003c\/li\u003e\n\u003cli\u003eTurbine wheel: 74mm exducer, inconel 713c alloy\u003c\/li\u003e\n\u003cli\u003eExhaust housing: 0.73 A\/R\u003c\/li\u003e\n\u003cli\u003eBearing type: dual ceramic ball bearings, metal caged\u003c\/li\u003e\n\u003cli\u003eCo-developed with Blouch Performance Turbo\u003c\/li\u003e\n\u003cli\u003eFitment: 2002-2007 Subaru WRX, 2004-2021 Subaru STI, 2004-2008 Subaru Forester XT\u003c\/li\u003e\n\u003cli\u003eStock location direct replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/images.squarespace-cdn.com\/content\/v1\/67293eda5d64c73c51b2c20b\/c2b2a026-f3e3-460d-b457-0b92944d77b9\/Dos100andshop-4.jpg?format=1000w\" alt=\"DOS 100 Turbo product detail\" style=\"max-width: 100%; height: auto; display: block; margin: 16px 0;\"\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eStraight From Subispeed\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe DOS 100 is for builders who have exhausted what a stock location turbo is supposed to be capable of and are not interested in the compromises that come with going rotated. Eight hundred wheel hp from a stock location EJ is a number that legitimately did not exist before this turbo. If you are at the point in your build where 700-750 hp is not enough and you still want to keep the engine bay clean and the intercooler piping simple, the DOS 100 is the answer. There is nothing else in this configuration that comes close to it.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/images.squarespace-cdn.com\/content\/v1\/67293eda5d64c73c51b2c20b\/44113566-5489-4a03-b837-ea92e8922256\/IMG_4066.JPEG?format=1000w\" alt=\"DOS 100 Turbo final install shot\" style=\"max-width: 100%; height: auto; display: block; margin: 16px 0;\"\u003e \u003cimg src=\"https:\/\/images.squarespace-cdn.com\/content\/v1\/67293eda5d64c73c51b2c20b\/55d06102-ff4a-49df-8c19-6c2263fa9aeb\/Dos100andshop-1.jpg?format=1000w\" alt=\"DOS Performance 100 Turbo\" style=\"max-width: 100%; height: auto; display: block; margin: 16px 0;\"\u003e\u003c\/p\u003e","brand":"DOS Performance","offers":[{"title":"Default Title","offer_id":52773592629537,"sku":"Dos-100","price":3000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/files\/Dos100andshop-1.webp?v=1779916302"},{"product_id":"tr-3-port-electronic-boost-solenoid-for-subaru-sti-2008","title":"Tomioka Racing 3-Port Electronic Boost Solenoid - 2008-2021 Subaru STI","description":"\u003ch4\u003e\u003cstrong\u003eTomioka Racing 3-Port Electronic Boost Solenoid - 2008-2021 Subaru STI\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe Tomioka Racing 3-Port Electronic Boost Solenoid is a precision-engineered aftermarket replacement for the factory boost control solenoid on 2008-2021 Subaru STI models.\u003c\/p\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/files\/TR-BSS1000_web2.jpg?v=1783346840\" alt=\"Tomioka Racing 3-Port Electronic Boost Solenoid - 2008-2021 Subaru STI\" style=\"width:100%; margin:15px 0; display:block;\"\u003e\n\n\u003ch4\u003e\u003cstrong\u003ePrecision Aftermarket Boost Solenoid for the 2008-2021 STI\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe Tomioka Racing 3-Port Electronic Boost Solenoid is a precision-engineered aftermarket replacement for the factory boost control solenoid on 2008-2021 Subaru STI models. The solenoid delivers faster boost response and improved boost control consistency compared to the OEM unit, which ages and loses precision over time. Technical specifications: 12V DC operating voltage, 32 ohm coil resistance, IP67 waterproof rating.\u003c\/p\u003e\n\n\u003ch4\u003e\u003cstrong\u003eWhy Replace the Factory Solenoid\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe factory boost control solenoid is an electronic valve that modulates boost pressure by controlling the wastegate actuator signal. Worn or aged solenoids produce inconsistent boost response, slow spool, and boost that wanders around the target. A new aftermarket solenoid with tight tolerances and fresh internals restores clean, consistent boost control -- particularly important on tuned cars where the ECU is working to hold a specific boost target.\u003c\/p\u003e\n\n\u003ch4\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible with stock and aftermarket turbo systems\u003c\/li\u003e\n  \u003cli\u003eWorks with factory and aftermarket ECU tunes\u003c\/li\u003e\n  \u003cli\u003eCompatible with E85 fuel systems\u003c\/li\u003e\n  \u003cli\u003eDirect OEM replacement with significant performance improvements\u003c\/li\u003e\n  \u003cli\u003e20% higher flow rate compared to stock solenoids\u003c\/li\u003e\n  \u003cli\u003eFaster boost response and reduced turbo lag\u003c\/li\u003e\n  \u003cli\u003eImproved high-temperature stability for consistent performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003e\u003cstrong\u003eFitment Notes\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eFits 2008-2021 Subaru STI\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv style=\"clear:both;\"\u003e\u003c\/div\u003e\n\n\u003ch4\u003e\u003cstrong\u003eStraight From Subispeed\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eA recommended replacement on any 2008-2021 STI that has accumulated mileage, is experiencing boost fluctuation, or is being tuned for elevated boost targets. The Tomioka solenoid is a direct replacement at a competitive price point. On tuned cars this is a straightforward reliability and consistency improvement.\u003c\/p\u003e\n\n\u003ch4\u003e\u003cstrong\u003eWhat's Included\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eTomioka Racing 3-Port electronic boost solenoid\u003c\/li\u003e\n  \u003cli\u003eWiring connector\u003c\/li\u003e\n  \u003cli\u003eMounting hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003e\u003cstrong\u003eAbout Tomioka Racing\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eTomioka Racing has been engineering bolt-on performance parts for Subaru platforms since 2007, with a design philosophy built around factory-style installation and real-world reliability. Every Tomioka Racing product is engineered to work with the factory setup -- clean installation, correct fitment, and durability under sustained use. For WRX, STI, BRZ, and the 86 platform, Tomioka Racing offers one of the most focused and thoroughly developed bolt-on catalogs available at this price point.\u003c\/p\u003e\n\n\u003ctable style=\"border-collapse:collapse; width:100%;\"\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align:left; padding:6px 10px; background:#1a2744; color:#fff; border:1px solid #ddd;\"\u003eYear\u003c\/th\u003e\n\u003cth style=\"text-align:left; padding:6px 10px; background:#1a2744; color:#fff; border:1px solid #ddd;\"\u003eMake\u003c\/th\u003e\n\u003cth style=\"text-align:left; padding:6px 10px; background:#1a2744; color:#fff; border:1px solid #ddd;\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"text-align:left; padding:6px 10px; background:#1a2744; color:#fff; border:1px solid #ddd;\"\u003eSubmodel\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #ddd;\"\u003e2008-2021\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #ddd;\"\u003eSubaru\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #ddd;\"\u003eSTI\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #ddd;\"\u003eAll\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Tomioka Racing (TR)","offers":[{"title":"Default Title","offer_id":52953241551137,"sku":"TR-BSS1000","price":180.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/files\/TR-BSS1000_web2.jpg?v=1783346840"},{"product_id":"grimmspeed-v2-bypass-valve-red-2004-2021-subaru-sti-2002-2007-wrx","title":"GrimmSpeed V2 Bypass Valve - Red - 2004-2021 Subaru STI \/ 2002-2007 WRX","description":"\u003ch4\u003e\u003cstrong\u003eGrimmSpeed V2 Bypass Valve (Red) ,  2004-2021 Subaru STI \/ 2002-2007 WRX\u003c\/strong\u003e\u003c\/h4\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0754\/6748\/9554\/products\/54736e1dfc591f2cbea9dbe6421c943b.jpg?v=1695768669\" alt=\"GrimmSpeed V2 Bypass Valve - Red - 2004-2021 Subaru STI \/ 2002-2007 WRX\" style=\"float:right;width:42%;max-width:320px;height:auto;margin:0 0 16px 20px;\"\u003e\n\n\u003cp\u003eThe GrimmSpeed V2 Bypass Valve in red for the 2004-2021 Subaru STI \/ 2002-2007 WRX replaces the factory recirculating bypass valve with a performance unit that provides more consistent venting of boost pressure during throttle lift events. The factory bypass valve is adequate at stock boost levels but can become a limitation ,  or fail ,  as boost pressure increases with modifications.\u003c\/p\u003e\n\n\u003cdiv style=\"clear:both;\"\u003e\u003c\/div\u003e\n\n\u003ch4\u003e\u003cstrong\u003eDETAILS\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eColor: Red\u003c\/li\u003e\n  \u003cli\u003eRecirculating design ,  vents to intake tract\u003c\/li\u003e\n  \u003cli\u003eMore consistent valve response than OEM\u003c\/li\u003e\n  \u003cli\u003eHandles elevated boost levels reliably\u003c\/li\u003e\n  \u003cli\u003eDirect replacement for factory bypass valve\u003c\/li\u003e\n  \u003cli\u003eFitment: 2004-2021 Subaru STI \/ 2002-2007 WRX\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0754\/6748\/9554\/products\/b184985643990fc8e5d2c0d39db10082.jpg?v=1695768669\" alt=\"GrimmSpeed V2 Bypass Valve - Red - 2004-2021 Subaru STI \/ 2002-2007 WRX\" style=\"max-width:100%;height:auto;display:block;margin:20px 0;\"\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0754\/6748\/9554\/products\/c2cc208de0aab34a90872023739bc1ba.jpg?v=1695768669\" alt=\"GrimmSpeed V2 Bypass Valve - Red - 2004-2021 Subaru STI \/ 2002-2007 WRX\" style=\"float:left;width:42%;max-width:320px;height:auto;margin:0 20px 16px 0;\"\u003e\n\n\u003cp\u003eWhen the throttle closes under boost ,  shifting gears, lifting off mid-corner ,  the turbocharger is still spinning and producing boost pressure that has nowhere to go. The bypass valve opens to recirculate this pressure back into the intake tract, preventing compressor surge and protecting the turbocharger. The factory bypass valve is spring-loaded for OEM boost levels ,  as boost increases, the valve can flutter, leak, or fail to open consistently.\u003c\/p\u003e\n\n\u003cdiv style=\"clear:both;\"\u003e\u003c\/div\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0754\/6748\/9554\/products\/c4ce5a9c0ba5aa83ccd3d65d6baa63c0.jpg?v=1695768669\" alt=\"GrimmSpeed V2 Bypass Valve - Red - 2004-2021 Subaru STI \/ 2002-2007 WRX\" style=\"max-width:100%;height:auto;display:block;margin:20px 0;\"\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0754\/6748\/9554\/products\/ba780a58a19a14459920051394cae4f5.jpg?v=1695768669\" alt=\"GrimmSpeed V2 Bypass Valve - Red - 2004-2021 Subaru STI \/ 2002-2007 WRX\" style=\"float:right;width:42%;max-width:320px;height:auto;margin:0 0 16px 20px;\"\u003e\n\n\u003cp\u003eThe GrimmSpeed V2 uses a more robust valve design that provides consistent response across a wider boost range. The recirculating design keeps all the boosted air in the intake system rather than venting to atmosphere ,  this maintains proper MAF readings and avoids the fuel trim issues that atmospheric bypass valves can cause on MAF-based fuel injection systems.\u003c\/p\u003e\n\n\u003cdiv style=\"clear:both;\"\u003e\u003c\/div\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0754\/6748\/9554\/products\/d7784b86b5d2bcd35d96c2ab0901a5ad.jpg?v=1695768669\" alt=\"GrimmSpeed V2 Bypass Valve - Red - 2004-2021 Subaru STI \/ 2002-2007 WRX\" style=\"max-width:100%;height:auto;display:block;margin:20px 0;\"\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0754\/6748\/9554\/products\/b7586e24b8a2c50d0e7561ff9a7f0348.jpg?v=1695768669\" alt=\"GrimmSpeed V2 Bypass Valve - Red - 2004-2021 Subaru STI \/ 2002-2007 WRX\" style=\"max-width:100%;height:auto;display:block;margin:20px 0;\"\u003e\n\n\u003ch4\u003e\u003cstrong\u003eWhat's in the Box\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eGrimmSpeed V2 bypass valve\u003c\/li\u003e\n  \u003cli\u003eInstallation hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003e\u003cstrong\u003eWhy Choose GrimmSpeed\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eGrimmSpeed has been engineering performance parts for Subaru platforms from their Portland, Oregon facility since 2003. Everything they make is designed around real-world use ,  their engineers drive the same cars their customers drive, which means product decisions are made with genuine platform knowledge behind them. GrimmSpeed designs parts in-house, sources quality materials, and validates fitment on the actual application before release. The result is parts that install correctly the first time, perform as advertised, and hold up under the conditions Subaru owners actually subject their cars to. Whether it is a critical engine component or a cosmetic upgrade, the same attention to detail and fit quality applies across the catalog.\u003c\/p\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0754\/6748\/9554\/products\/e59990872887d638f9e608e4aa6b9ed8.jpg?v=1695768669\" alt=\"GrimmSpeed V2 Bypass Valve - Red - 2004-2021 Subaru STI \/ 2002-2007 WRX\" style=\"max-width:100%;height:auto;display:block;margin:20px 0;\"\u003e\n\n\u003ch4\u003e\u003cstrong\u003eThe RallySport Take\u003c\/strong\u003e\u003c\/h4\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0754\/6748\/9554\/products\/9f5684dedc7b0a1131f1698f04a60708.jpg?v=1695768669\" alt=\"GrimmSpeed V2 Bypass Valve - Red - 2004-2021 Subaru STI \/ 2002-2007 WRX\" style=\"float:left;width:42%;max-width:320px;height:auto;margin:0 20px 16px 0;\"\u003e\n\n\u003cp\u003eThe bypass valve upgrade is a smart early modification for any turbocharged Subaru that has had boost increased through a tune or hardware upgrade. The GrimmSpeed V2 is the straightforward solution ,  drop-in replacement, correct recirculating function, more reliable than the OEM unit at elevated boost. Fits the 2004-2021 Subaru STI \/ 2002-2007 WRX.\u003c\/p\u003e\n\n\u003cdiv style=\"clear:both;\"\u003e\u003c\/div\u003e\n\n\u003ch4\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/h4\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;font-size:14px;\"\u003e\n\u003cthead\u003e\u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003cth style=\"text-align:left;padding:8px 12px;border:1px solid #ddd;\"\u003eYear\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:8px 12px;border:1px solid #ddd;\"\u003eMake\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:8px 12px;border:1px solid #ddd;\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:8px 12px;border:1px solid #ddd;\"\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background:#fafafa;\"\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #ddd;\"\u003e2004-2021\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #ddd;\"\u003eSubaru\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #ddd;\"\u003eWRX STI\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #ddd;\"\u003eEJ257\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #ddd;\"\u003e2002-2007\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #ddd;\"\u003eSubaru\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #ddd;\"\u003eWRX\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #ddd;\"\u003eEJ20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"GrimmSpeed","offers":[{"title":"Default Title","offer_id":53061008032033,"sku":"grmGRM126032RED","price":299.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/files\/54736e1dfc591f2cbea9dbe6421c943b.jpg?v=1784666675"},{"product_id":"093128-grimmspeed-intercooler-splitter","title":"GrimmSpeed Intercooler Splitter - 2015-2021 Subaru WRX \/ STI w\/Grimmspeed TMIC","description":"\u003ch4\u003e\u003cstrong\u003eGrimmSpeed Intercooler Splitter, 2015-2021 Subaru WRX \/ STI with GrimmSpeed TMIC\u003c\/strong\u003e\u003c\/h4\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0754\/6748\/9554\/products\/2478538b69025332d4d6077a19f0f304.jpg?v=1694751779\" alt=\"GrimmSpeed Intercooler Splitter - 2015-2021 Subaru WRX \/ STI w\/Grimmspeed TMIC\" style=\"float:right;width:42%;max-width:320px;height:auto;margin:0 0 16px 20px;\"\u003e\n\n\u003cp\u003eThe GrimmSpeed Intercooler Splitter mounts beneath the factory hood scoop and directs ram air over the GrimmSpeed TMIC surface on 2015-2021 WRX and STI. Without a splitter, much of the available ram air misses the intercooler core entirely.\u003c\/p\u003e\n\n\u003cdiv style=\"clear:both;\"\u003e\u003c\/div\u003e\n\n\u003ch4\u003e\u003cstrong\u003eDETAILS\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eDirects hood scoop air over TMIC surface\u003c\/li\u003e\n  \u003cli\u003eCompanion to GrimmSpeed TMIC\u003c\/li\u003e\n  \u003cli\u003eImproves TMIC cooling efficiency from available ram air\u003c\/li\u003e\n  \u003cli\u003eFitment: 2015-2021 Subaru WRX \/ STI with GrimmSpeed TMIC\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0754\/6748\/9554\/products\/0c60f4fdde5409ca4d532c85c015d6fa_e34417f4-d3ee-45c1-8cf1-62097e47c2b2.jpg?v=1694751779\" alt=\"GrimmSpeed Intercooler Splitter - 2015-2021 Subaru WRX \/ STI w\/Grimmspeed TMIC\" style=\"max-width:100%;height:auto;display:block;margin:20px 0;\"\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0754\/6748\/9554\/products\/109b4b552faf7ea60ba133dcf9e62d8c_8d143804-b947-4bd3-9d3d-8d8fa842aebb.jpg?v=1694751779\" alt=\"GrimmSpeed Intercooler Splitter - 2015-2021 Subaru WRX \/ STI w\/Grimmspeed TMIC\" style=\"float:left;width:42%;max-width:320px;height:auto;margin:0 20px 16px 0;\"\u003e\n\n\u003cp\u003eThe factory hood scoop routes air into the engine bay in the direction of the TMIC, but without a splitter, airflow distribution is diffuse and a significant portion passes around the core rather than through it. At highway speeds and track conditions where ram pressure is meaningful, this represents wasted cooling potential.\u003c\/p\u003e\n\n\u003cdiv style=\"clear:both;\"\u003e\u003c\/div\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0754\/6748\/9554\/products\/4545d1b5ac1228525614dc8663525c76_209b6e29-a116-4b7b-8983-8867621bfdaf.jpg?v=1694751779\" alt=\"GrimmSpeed Intercooler Splitter - 2015-2021 Subaru WRX \/ STI w\/Grimmspeed TMIC\" style=\"max-width:100%;height:auto;display:block;margin:20px 0;\"\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0754\/6748\/9554\/products\/aed1c4952b1de2189130c4a254abdabc_28c282a4-88e2-4ece-9783-460187d96d81.jpg?v=1694751779\" alt=\"GrimmSpeed Intercooler Splitter - 2015-2021 Subaru WRX \/ STI w\/Grimmspeed TMIC\" style=\"float:right;width:42%;max-width:320px;height:auto;margin:0 0 16px 20px;\"\u003e\n\n\u003cp\u003eThe GrimmSpeed splitter mounts to the underside of the hood scoop and creates a directed channel toward the intercooler surface. More effective cooling from the same available airflow.\u003c\/p\u003e\n\n\u003cdiv style=\"clear:both;\"\u003e\u003c\/div\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0754\/6748\/9554\/products\/9333509bace59deefdf3b73a9de6b3e6_1634d970-3495-4566-a53d-9cde4a5abcab.jpg?v=1694751779\" alt=\"GrimmSpeed Intercooler Splitter - 2015-2021 Subaru WRX \/ STI w\/Grimmspeed TMIC\" style=\"max-width:100%;height:auto;display:block;margin:20px 0;\"\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0754\/6748\/9554\/products\/9349a45e18636cc736bff23cf1104050_49fc2500-61c0-4db6-bf68-968ed10c2649.jpg?v=1694751779\" alt=\"GrimmSpeed Intercooler Splitter - 2015-2021 Subaru WRX \/ STI w\/Grimmspeed TMIC\" style=\"max-width:100%;height:auto;display:block;margin:20px 0;\"\u003e\n\n\u003ch4\u003e\u003cstrong\u003eWhat's in the Box\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eGrimmSpeed intercooler splitter\u003c\/li\u003e\n  \u003cli\u003eMounting hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003e\u003cstrong\u003eWhy Choose GrimmSpeed\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eGrimmSpeed has been engineering performance parts for Subaru platforms from their Portland, Oregon facility since 2003. Everything they make is designed around real-world use, their engineers drive the same cars their customers drive, which means product decisions are made with genuine platform knowledge behind them. GrimmSpeed designs parts in-house, sources quality materials, and validates fitment on the actual application before release. The result is parts that install correctly the first time, perform as advertised, and hold up under the conditions Subaru owners actually subject their cars to. Whether it is a critical engine component or a cosmetic upgrade, the same attention to detail and fit quality applies across the catalog.\u003c\/p\u003e\n\n\u003ch4\u003e\u003cstrong\u003eThe RallySport Take\u003c\/strong\u003e\u003c\/h4\u003e\n\n\u003cp\u003eThe intercooler splitter is the companion upgrade that makes the GrimmSpeed TMIC investment work as intended. The TMIC and splitter are designed as a system. Fits the 2015-2021 Subaru WRX and STI with GrimmSpeed TMIC installed.\u003c\/p\u003e\n\n\u003cdiv style=\"clear:both;\"\u003e\u003c\/div\u003e\n\n\u003ch4\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/h4\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;font-size:14px;\"\u003e\n\u003cthead\u003e\u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003cth style=\"text-align:left;padding:8px 12px;border:1px solid #ddd;\"\u003eYear\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:8px 12px;border:1px solid #ddd;\"\u003eMake\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:8px 12px;border:1px solid #ddd;\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:8px 12px;border:1px solid #ddd;\"\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\u003ctr style=\"background:#fafafa;\"\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #ddd;\"\u003e2015-2021\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #ddd;\"\u003eSubaru\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #ddd;\"\u003eWRX \/ STI\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #ddd;\"\u003ewith GrimmSpeed TMIC\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"GrimmSpeed","offers":[{"title":"Default Title","offer_id":53061013307681,"sku":"grmGRM093128","price":255.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/files\/2478538b69025332d4d6077a19f0f304.jpg?v=1784668334"},{"product_id":"090261-grimmspeed-front-mount-intercooler-bumper-bar-black","title":"GrimmSpeed Front Mount Intercooler Bumper Bar Black - 2015-2021 Subaru WRX \/ STI","description":"\u003ch4\u003e\u003cstrong\u003eProtect the Intercooler — GrimmSpeed FMIC Bumper Bar for the VA WRX\/STI\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe GrimmSpeed Front Mount Intercooler Bumper Bar in Black for the 2015-2021 Subaru WRX and STI is a direct-fit bumper bar that protects a front-mount intercooler installation from damage during low-speed impacts, parking lot encounters, and road debris. When upgrading to a front-mount intercooler on the VA WRX or STI, the intercooler core sits directly behind the front bumper opening with minimal protection — the GrimmSpeed bumper bar provides a structural barrier between the intercooler and the road without obstructing airflow through the core.\u003c\/p\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/products\/fbbe1c029e1c72eeb9ef4ca6832bde8e.jpg?v=1697902802\" alt=\"GrimmSpeed Front Mount Intercooler Bumper Bar Black - 2015-2021 Subaru WRX \/ STI\" style=\"width:100%;max-width:100%;margin:20px 0;border-radius:4px;\"\u003e\n\n\u003ch4\u003e\u003cstrong\u003eStructural Protection Without Restricting Airflow\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe bumper bar is designed around the airflow requirements of a front-mount intercooler — the bar geometry provides impact protection at the bumper opening while maintaining the open airflow path through the intercooler core. The powdercoated steel construction provides structural rigidity to deflect debris and low-speed contact without being so rigid that it transfers all impact energy directly to the intercooler. It's a simple piece that solves a real problem for any VA WRX or STI running a front-mount intercooler.\u003c\/p\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/products\/608f7905a2aa516596030ed27920701a.jpg?v=1697902802\" alt=\"GrimmSpeed Front Mount Intercooler Bumper Bar Black - 2015-2021 Subaru WRX \/ STI\" style=\"float:right;max-width:47%;margin:0 0 16px 16px;border-radius:4px;\"\u003e\n\n\u003ch4\u003e\u003cstrong\u003eBolt-In at Factory Bumper Mounting Points\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe GrimmSpeed FMIC bumper bar bolts to factory bumper mounting points on the 2015-2021 WRX and STI — no modification to the bumper, intercooler, or chassis. Compatible with GrimmSpeed and most other front-mount intercooler kits on the VA platform. Installation is straightforward with basic hand tools.\u003c\/p\u003e\n\n\u003cdiv style=\"clear:both\"\u003e\u003c\/div\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/products\/97b03c991702fb31ca2bc401da5a10d4.jpg?v=1697902802\" alt=\"GrimmSpeed Front Mount Intercooler Bumper Bar Black - 2015-2021 Subaru WRX \/ STI\" style=\"float:left;max-width:47%;margin:0 16px 16px 0;border-radius:4px;\"\u003e\n\n\u003ch4\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003ePlatform: 2015-2021 Subaru WRX \/ STI\u003c\/li\u003e\n  \u003cli\u003eProtects front-mount intercooler from low-speed impacts and road debris\u003c\/li\u003e\n  \u003cli\u003eDesigned to maintain airflow through FMIC core — no restriction\u003c\/li\u003e\n  \u003cli\u003eBolt-in at factory bumper mounting points\u003c\/li\u003e\n  \u003cli\u003eCompatible with GrimmSpeed and most other VA WRX\/STI FMIC kits\u003c\/li\u003e\n  \u003cli\u003ePowdercoated steel construction — structural impact protection\u003c\/li\u003e\n  \u003cli\u003eBlack powdercoat finish\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv style=\"clear:both\"\u003e\u003c\/div\u003e\n\n\u003ch4\u003e\u003cstrong\u003eFitment Notes\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003ePlatform: 2015-2021 Subaru WRX \/ STI\u003c\/li\u003e\n  \u003cli\u003eRequires front-mount intercooler installation — not for use with stock top-mount\u003c\/li\u003e\n  \u003cli\u003eCompatible with most VA WRX\/STI FMIC kits — verify specific kit clearances\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003e\u003cstrong\u003eStraight From Subispeed\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe GrimmSpeed FMIC bumper bar is the purchase that seems optional until something hits the intercooler. A front-mount intercooler on a car that lives in the real world — parking lots, highway debris, the occasional low-speed contact — is exposed hardware. The GrimmSpeed bar adds meaningful protection for a small investment. It's also frequently overlooked in the build planning process and regularly regretted when it's missing.\u003c\/p\u003e\n\n\u003ch4\u003e\u003cstrong\u003eWhat's Included\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eGrimmSpeed FMIC Bumper Bar — Black\u003c\/li\u003e\n  \u003cli\u003eMounting hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003e\u003cstrong\u003eAbout GrimmSpeed\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eGrimmSpeed is a Pacific Northwest-based performance parts manufacturer that has been building Subaru-specific hardware since 2003. Founded by engineers who were actively building and racing Subarus themselves, GrimmSpeed's catalog reflects the priorities of people who use the products they make — turbo inlets, downpipes, uppipes, boost controllers, intercoolers, and engine bay accessories designed specifically for the EJ and FA-series Subaru platforms. Every GrimmSpeed product is engineered, tested, and refined in-house, and their focus on Subaru means the fitment and function reflect a deep understanding of the specific platforms they cover. Subispeed carries the full GrimmSpeed catalog because their approach to product development consistently produces parts that perform as advertised and fit correctly out of the box.\u003c\/p\u003e\n\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eYear\u003c\/th\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e2015-2021\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eWRX\u003c\/td\u003e\n\u003ctd\u003eEJ255\/FA20DIT\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e2015-2021\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eWRX STI\u003c\/td\u003e\n\u003ctd\u003eEJ257\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"GrimmSpeed","offers":[{"title":"Default Title","offer_id":53061017272609,"sku":"grmGRM090261","price":229.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/files\/3c2703aea7d8e2a41d71a8cc42cf1cbb.jpg?v=1784669202"}],"url":"https:\/\/www.subispeed.com\/collections\/2015-2021-subaru-sti-turbo-boost.oembed?page=3","provider":"SubiSpeed","version":"1.0","type":"link"}