Shopping for 2008-2013 Subaru WRX STI Blow Off Valve Kits and BOV Kits? Browse all of our 2008-2013 Subaru WRX STI Blow Off Valve Kits setups from Cobb Tuning BPV 724650, Perrin Red Blow Off Valve, Perrin Black Blow Off Valve, AP Blue Blue Off Valve, GFB Blow Off Valve, among many other 2008-2013 Subaru WRX STI Blow Off Valve Kit components.