Turbo XS Hybrid Blow Off Valve (2002-2007 Subaru WRX / 2004 STI)
Not too loud and not too quiet, the WS02-XS-HYB from TurboXS is the valve for you if you want an upgraded Blow Off Valve that you can hear when you want to, but not when you don't.
Not too loud and not too quiet, the WS02-XS-HYB from TurboXS is the valve for you if you want an upgraded Blow Off Valve that you can hear when you want to, but not when you don't.