You simply unbolt your factory BOV then bolt this BOV straight on. No need to cut holes or weld, its that simple! BOLT ON Blow Off Valve bov For Subaru WRX / STI / Forester BOV Turbo EJ Blue. For later model WRX and Forester plus Liberty GT models we have other bolt on BOV kits for sale that will fit your vehicle.
The Bolt-On Blow Off Valve BOV Kit would be perfect for the Subaru WRX STI Forester with a petrol turbo engine, manufactured between 2005 and 2007.
