More washers will make the spring tighter in the BOV. If you have increased boost, then you want to add more washers to keep the BOV from opening too soon from not having the spring tight enough. These valves come with 4 washers installed for factory set cars. If you have modifications, you will want to monitor your boost and make sure it doesn't taper off under high load.
Not too loud and not too quiet, the W15-XS-HYB from TurboXS is the valve for you if you want an upgraded Blow Off Valve that you can hear when you want to but not when you don't. Designed specifically for the 2015 WRX using our all new "XS" BOV platform, this valve is designed to vent partly to atmosphere and partly back to the intake giving you the "best of both worlds". This valve comes complete with everything you need to replace your stock bypass valve.
This product makes it much easier to make a BOV one of your first modifications.
Note: The BOV is intended to work with a stock tune and no other modifications. When other modifications are added, an updated tune is recommended.
TurboXS Hybrid Blow Off Valve Installation
This Part Fits
- 2015-2020 WRX TurboXS Hybrid Blow Off Valve Type XS
- 2014-2016 Forester TurboXS Hybrid Blow Off Valve Type XS
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16 customer reviews
Sounds good, works well
The hybrid BOV is actually a quite clean install. On the '17's it is actually easier to leave the front side hose connected, but other than that the install video was very helpful. When it is all said and done, the install was not complicated, but I would recommend a lift to make it easier. If you are looking for the blowoff sound and not wanting to deal with idiot lights being on or having to reprogram the ecu... this fits the bill perfectly.
I installed this with the Mishimoto CAI. After reading about how many washers to install and issues with engine stall I have to admit I was hesitant to put it on. Install was easy and the car runs fantastic. I installed the BPV just as it came from the factory and I have no issues at all. My boost did drop from 22.5 to 18.0, but I think this is normal. This product really makes driving the WRX a lot of fun.
Seriously...this brings me so much joy while driving. Sound is great. I was considering getting the louder bov before I bought this one, but I am more then happy with how loud this one is. Would recommend to anyone and everyone.
Couldn't stop walking around my house making a pshhhhh noise every two second after first drive...wife hit me...beware of wife's reaction to your overwhelming joy!
Easy install for my 2018 wrx. Sounds great, gives you that BOV when you want it and you don't lose your boost at low rpms. Pretty straight forward install just about an hour for install. No check engines or stalling at idle. Sounds great highly recommend!
Installed 15 WRX. Great quality and somewhat easy installation. Make great sound once installed. My car has NO Cobb access and this is the first mod to engine. I have seen NO engine light and car runs fine. Would recommend this product.
I installed this the same time I installed the Cobb Big SF intake and it was relatively easy. First you get the sucking noise of the intake and turbo and then whoosh! Exactly what you expect a car with a turbo to sound like. I highly recommend.
Easy installation and makes me smile
This was a surprisingly easy install. With just some ramps and simple tools you can have this job done in about an hour. It's definitely not too loud but loud enough. No check engine lights. It always makes me smile a little when I hear the woosh
This was a simple part to add and sounds great. No check engine lights and car runs great. Excellent video by Subispeed showing the install making it that much easier to get in and the car back on the road.
Warning: this will increase your fuel consumption as you happily step on the gas to hear more whooshing. No CEL-- works extremely well. I did have to get a separate hose adapter for the JDM rex. The stock hose was bigger. Other than that, this bov is highly recommended!
So I just installed this in my 2016 wrx and it sounds amazing! You get that awesome bov sound when you want it and nice and quiet when ur just cruising. And no check engine light either just like they said. Thanks subispeed!
It was easy to install and it sounds great!!!!!!!!!!!
Amazing fit, great video instructions, sounds awesome! Just a little upset it went on sale day after I received it :( Over all happy though
I'm Very Please about this product works just as subispeed said about this BOV no Engine Light just out of the box and ready to go!!! i'm very happy and i just enjoy that BOV sound....
THANKS GUYS =)
nice product and good sound!!! :) thanks!!
Works just as subispeed said it would. No enigine check lights. I'm really happy with my whole order.
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