Product Description
Fitment Information:
2015-2021 Subaru WRX
2014-2018 Forester XT
Add horsepower, quicker response, and reliability with the PERRIN BOV. A must-have replacement for the leaky, slow responding, and plastic OEM blow off valve.
Features:
Faster Response Time, Consistent Boost, and Better Drivability
Adjustable Release Setting and Flow Control
Direct Bolt On BOV
No Tuning Required
Body Material 6061 Aluminum
Body Finish Anodize Red
Intermediate Installation Effort
Estimated Installation Time - 1 Hour
Installation Instructions
5 Year Manufacturer Warranty
With large inlets and outlets, the PERRIN Blow Off Valve is sized perfectly to relieve any amount of boost pressure without fear of compressor surge. Don’t be fooled by giant oversized blow off valves, these inlet and outlet sizes were chosen to ensure the perfect balance of flow and to maintain boost in your system, without ruining response by dumping too much boost.
It is vital that a blow off valve for your WRX recirculates the air back to the intake track to maintain proper air-fuel ratio and drivability between shifts. While this can be set up as a vent-to-atmosphere style blow off valve, we only recommend that on cars running aftermarket Speed Density type tuning (cars without mass airflow sensor).