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| Perrin Recirculating BOV Kit for 02-09 Subaru WRX & 04-09 STi |
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The Blow-off valve is essential to all turbocharged vehicles. The purpose of the Perrin WRX & STi Blow-off Valve is to relieve compressor surge without reducing compressor speed. It controls boost pressure that is built up by the turbo and recirculates air when the car is not under load (in between shifts). This prevents pressure from backing up into the compressor housing, causing the turbo impeller blade to rapidly stop or even worse, to spin backwards (compressor surge or backspin). Doing so can be potentially destructive to the turbine wheel and shaft. | |
| The Perrin Recirculating Blow off Valve for the 02-09 WRX & 04-09 STi is a direct bolt on for a simple install. Since this blow off valve recirculates air just like your stock blow off valve, you will not experience a rich condition between shifts, or hear a loud rush of air expelled. The Perrin Recirculating Blow off Valve is rated to hold 190 psi, so this blow off valve will never leak under high boost pressures.
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| Shipping costs are calculated upon checkout |
NOTE: 08+ WRX models use a different version of the Perrin valve than the 02-07 WRX and 04-09 STi. Please choose the proper valve for your car below. This Perrin BOV Recirculates only.
FITMENT: 02-09 WRX & 04-09 STi |
| Description |
Part #: |
MSRP: |
Price: |
Inventory |
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Perrin SS (Red)
Recirculating BOV
02-07 WRX
04-09 STi |
PSP-INT-600SS |
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Perrin Black
Recirculating BOV
02-07 WRX
04-09 STi |
PSP-INT-600BK |
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Perrin SS (Red)
Recirculating BOV
08-09 WRX |
PSP-INT-610SS |
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Perrin Black
Recirculating BOV
08-09 WRX |
PSP-INT-610BK |
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