Nameless Performance Bypass Valve 2011-2014 Legacy GT YMM_2017_BRZ each providing over 1

each providing over 1

and other Subaru models

For Subaru WRX and STI owners

looks refined

direct bolt-on installation with no modifications required

Nameless Performance Bypass Valve 2011-2014 Legacy GT YMM_2017_BRZ each providing over 1The most important feature of a recirculating bypass valve (Recirc Valve, BPV, BOV) on your Subaru is to evacuate the pressure out of the charge circuit when the throttle is closed. This prevents a surge of boost from hitting the throttle and then reflecting back toward the compressor wheel where it can slow or even stop the movement of the compressor wheel and corresponding turbine wheel. Ideally, the function of a bypass valve is to open this