This kit contains the parts necessary to install the factory Bypass Valve on a 2008+ STi when installing the TurboXS 2008+ FMIC (WS08-FMIC). Also allows you to install just about any other manufacturers valve that can be installed on the factory TMIC (HKS, GRreddy, etc.)
TurboXS is one of the originators in Subaru WRX STI performance. Based out of Maryland, TurboXS has created some of the most recognized Blow Off Valves, Exhausts, Front Mount Intercoolers, and even their piggyback ECU system. Having expanded into other vehicles including the Mitsubishi EVO, Nissan 350Z, and Mazdaspeed, TurboXS is constantly doing R&D to offer the most affordable and performance oriented products available for your tuner car.