Perrin Recirculating Blow Off Valve | 2002-07 Subaru WRX/2004-2019 STI (PSP-TAC-600)

Perrin Performance
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2002-2007 WRX / 2004-2019 STI Recirculating BOV by Perrin

The tiny outlet on the OEM BOV restricts the rate at which boost can be vented, and is prone to leaking boost. The PERRIN BOV has a much larger outlet and is fully adjustable, eliminating this concern. With large 1.225" inlets and outlets, the PERRIN Blow Off Valve is sized perfectly to relieve any amount of boost pressure without fear of compressor surge. 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.

The PERRIN Blow Off Valve 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 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 surge. 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 blow off valve.

It is vital that a blow off valve for your WRX/STI recirculates the air back to the intake track to maintain proper air-fuel ratio and driveability between shifts. The PERRIN Blow Off Valve requires very little maintenance but when needed, it's very easy and quick to disassemble. Two O-rings are used to seal vital components from the elements making for extended time between service intervals. There are no special tools required and maintenance can be performed without removing the blow off valve from the vehicle.

The PERRIN Blow Off Valve cap, piston & flange are all CNC machined from 6061 Billet Aluminum. The PERRIN Blow Off Valve body is CNC machined from a single block of aluminum. This makes for a clean look that reduces potential failure points and leaks without additional parts. The PERRIN Blow Off Valve body comes in either a black or red anodized finish and the cap comes black anodized. Included with every PERRIN Blow Off Valve are the necessary components to make this a direct bolt-on for your WRX/STI. Each blow off valve is pre-set out of the box to work perfectly with every application.

Features

  • CNC Machined 6061 Aluminum Construction
  • Red or Black Anodized Finish (Black on Cap)
  • Recirculates Air to the Intake Track
  • Adjustable Relief Pressure (Spring Tension)
  • Adjustable Flow Control (Air Volume)
  • Low Maintenance, No Special Tools Required
  • Direct Fit, Preset and Ready to Install

Applications

  • 2002 - 2007 Subaru Impreza WRX
  • 2004 - 2014 Subaru Impreza WRX STI
  • 2015 - 2019 Subaru WRX STI

Benefits

  • Faster Response Times
  • Consistent Boost
  • Perfect Seal
  • Improved Drivability

Specifications

  • Body Material: 6061 Aluminum
  • Body Finish: Anodized
  • Piston Material: 6061 Aluminum
  • Piston Finish: Anodized
  • Spring Material: Stainless Steel
  • Flange Material: 6061 Aluminum
  • Cap Material: 6061 Aluminum
  • Cap Finish: Anodized

What's In The Box?

  • 1 - Perrin BOV
  • 1ft - 1/4" Fuel Hose
  • 2.2ft - 1/2" Fuel Hose
  • Necessary Hardware
  • Instructions/Manuals
  • Warranty Information

References

Warranty

  • PERRIN Performance warrants that this product will be free from defects in material and workmanship within a 60 month period from the date of purchase.

Customer Reviews

Based on 3 reviews
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J
John Niewojna

Does it’s job no complaints! See or hear no different over oem may just be me or my setup though.

V
Victor A.
AMAZING BOV

This thing sounds amazing with stock intake system can’t wait to pair with the Perrin cold air intake I’m just wondering is it bad that I unscrewed it to much and the spring popped out but I put it back together and seems to be running fine

B
Brandon R.
Music to my Ears

This BPV is not super loud like an atmospheric BOV but wow it sounds so much louder and distinct compared to the OEM BPV. Best thing about this purchase was no tune was necessary since it still recirculates the air back into the engine! 10 out of 10 would recommend!!!