GrimmSpeed 3 Port Electronic Boost Control Solenoid - 2008-2021 Subaru STI

GrimmSpeed provides 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. The Original Direct-Fit BCS for turbo Subarus GrimmSpeed provides the most complete and easy to use 3-Port Electronic Boost Solenoid for available for all turbo Subarus. Unlike your OEM 2-port solenoid, this solenoid 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 GrimmSpeed's solenoid, you are able to spool your turbo quicker and maintain tight control of boost levels throughout your power curve. In addition, our solenoid features a balanced valve to withstand up to 120psi without a slowing response by even a single millisecond.