Grimmspeed Boost Control Solenoid - Subaru 15-21 WRX/FA20 [Full Kit] - 057041 335 Series The filter meets or exceeds

The filter meets or exceeds original equipment specifications and provides improved filtration and durability

Longer spring for wider range of adjustment (40-130 PSI)

04-06 Subaru Impreza WRX STI 2

Water/methanol injection for gas engines is a proven means for effectively reducing engine inlet air temperatures and suppressing harmful detonation on forced induction and high compression naturally aspirated (NA) race engines

Grimmspeed Boost Control Solenoid - Subaru 15-21 WRX/FA20 [Full Kit] - 057041 335 Series The filter meets or exceedsAn Elegantly Engineered Solution. If you've been in the Subaru game for long, you're probably well aware that a 3 port Electronic Boost Control Solenoid (EBCS) is considered by most to be a 'must have' improvement before having your car tuned. GrimmSpeed has become the trusted brand in the EBCS market, with tens of thousands of solenoids in operation today across the globe. The 2015 21 WRX offers a unique change of pace, as the factory 2 port solenoid