The Forced Performance Black turbocharger for Subaru STI and WRX models features an 84mm CH8CM turbine housing with an external wastegate and an included oil feed line. This black option supports external wastegate routing and higher turbine flow, intended for Subaru turbo systems that use external boost control and enlarged exhaust housings.
Forced Performance Subaru STi/WRX Black Turbocharger 84mm CH8CM Turbine Hsg External WG w/Oil Line