Ignition Projects

Ignition Projects Quad Spark Ignition Coil Packs

2015-2021 Subaru STI

Ships for free in the 48 states

SKU: IP-M136406Q

In Stock

Ships within 24 hours

The Quad Spark Ignition Coil Packs will increase the ignition spark for a smoother power band in the Subaru STI. 


Ignition Projects Quad Spark Ignition Coil Packs 2015-2019 Subaru STI


  • Eliminates misfire
  • Increased throttle response
  • Stabilizes and smoothes idle
  • Quickens starts
  • 46% increase in ignition power
  • Direct plug-and-play installation over your OEM coils
  • Sold as a set of (4) coil packs



The Ignition Projects Quad Spark Ignition Coil Packs have been designed using Ignition Project's Quad-Spark technology that creates a secondary voltage that produces a 46% increase in secondary current. Powerful quad sparks are generated in 1/1000 of a second at low-mid RPM (up to 3000 RPM) increasing throttle response and low-end drivability. After 3000 RPM, the coil switches to a powerful single spark which is critical for performance engines. 

The result is a smoother running engine and a stronger spark output which is needed when running more performance through modified engines. These coil packs are a simple plug-and-play installation that are direct replacements for your OEM coil packs, and will come as a complete set. 

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