GrimmSpeed Boost Control Solenoid - Subaru 06-07 WRX/04-07 STi (057002) StillenShipping_30 We extensively track and street

We extensively track and street tested several iterations to deliver a system that not only makes your MK8 Golf R look great

VW016 pressure plate features an exclusive diaphragm design to increase clamp load

Ideal for converting from fuel injection to carburetion using the stock

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GrimmSpeed Boost Control Solenoid - Subaru 06-07 WRX/04-07 STi (057002) StillenShipping_30 We extensively track and streetGrimmSpeed is proud to provide 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. Using our solenoid, you are able to spool your turbo quicker and maintain tight control of boost levels