PERRIN Performance Blow Off/Bypass Valve Subaru 2015-2021 WRX & 2014-2018 Forester XT
PSP-TAC-615RD
Add horsepower, quicker response, and reliability with the PERRIN BOV/BPV. A must-have replacement for the leaky, slow responding, and plastic OEM blow off valve.
The tiny outlet on the OEM BOV restricts the rate at which boost can be vented. Cars running higher boost levels and larger turbos can experience compressor surge, damaging your turbo. The PERRIN BPV has a much larger outlet and is fully adjustable, eliminating this concern.
With large inlets and outlets, the PERRIN BPV 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.
Increase horsepower and torque without ECU recalibration or tune! This part is designed and tested to work safely on your vehicle without any tuning required! However, more power can be gained with proper ECU tuning! Confirm any tune or recalibration you add is specific for ALL modifications added to the vehicle.
The PERRIN BPV cap features adjustable spring tension, which allows for an adjustment when the blow-off valve vents. A looser setting will make it act smooth and more like stock. Setting it harder will cause it to vent later and with significantly increased boost levels. This adjustment is important in maintaining the air within the boost system without reducing turbo response.
The unique design allows you to control the volume of air released when the blow-off valve vents. Adjusting the volume of air helps maintain the perfect amount of boost in your system during shifts without causing compressor surges. Venting too little can damage the turbo, venting too much air can make the throttle less responsive. This adjustment is independent of the relief pressure allowing for a totally customizable bypass valve.
Specs:
- Boost Side Tube OD 1.325"
- Intake Side Tube OD 1.00"
- Body Material 6061 Aluminum
- Body Finish Anodize Red
- Piston Material 6061 Aluminum
- Piston Finish Anodize Clear
- Spring Stainless Steel
- Flange 6061 Aluminum
- Cap Material 6061 Aluminum
- Cap Finish Anodize Black
- (1) PERRIN BPV
- (1) Plastic Connector
- Warranty & Instructions
Fitment:
- 2005-2009 Subaru Legacy GT
- 2009-2013 Subaru Forester XT
- 2002-2007 Subaru WRX
- 2004-2021 Subaru STI
Review pages below for additional information: