Improve the performance in Subaru WRX with the Grimmspeed Stage 1 Power Package. The stage 1 Power Package consists of an upgraded Stealthbox Cold Air Intake system that replaces the factory restrictive unit, and allows the turbocharger to breathe better which increases horsepower, torque, and improves throttle response. Additionally, Grimmspeed includes their 3-Port Electronic Boost Control Solenoid has been provided to improve boost control response. When combined with a quality intake, this will build boost faster, and more effectively. The Grimmspeed boost control solenoid is a direct plug and play into the OEM harness. This kit will take around an hour to install.
1 x GrimmSpeed FA20 Boost Control Solenoid Kit (part number 057041)
1 x GrimmSpeed Stealthbox Air Intake - Black (part number 060060)
1 x GrimmSpeed License Plate Frame (Pair) (part number 111002)