The TurboXS 2002 - 2007 Subaru WRX Boost Control Solenoid is designed to replace factory 2 port boost solenoid with a 3 port. This part is required for great boost control on your WRX when using an aftermarket Downpipe or Upgraded Turbocharger.
Turbo XS 02-07 Subaru WRX FA20 Boost Control Solenoid Kit
TurboXS 2002 - 2007 Subaru WRX Boost Control Solenoid
Turbo XS 02-07 Subaru WRX/STi Boost Control Solenoid
2002 - 2007 Subaru WRX Boost Control Solenoid
TurboXS Boost Control Solenoid
Turbocharger Boost Solenoid