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Perrin Recirculating Blow-Off Valve (15-21 WRX)
Inefficient factory blow off valves (BOV) can hinder boost response during shifts and can damage your expensive turbo charger. PERRIN offers several choices for owners to choose the best solution to the problem.
Construction
The PERRIN blow off valve cap, piston & flange are all CNC machined from 6061 Billet Aluminum. The body is CNC machined from a single block of aluminum. No additional bolt on pieces means we eliminate potential leaks.
Adjustable Relief Pressure
The PERRIN BOV features an adjustable cap which allows you to tailor when your BOV releases. Set it up loose for a smoother release of boost at light loads and RPM. Or crank down the cap to release boost only at higher boost loads and RPMs. This feature is independent of relief volume.
Adjustable Relief Volume
Our unique design allows you to adjust the volume of air released when blowing off. This adjustment is independent of the resistance to blowing off. Venting too little can damage the turbo, venting too much air can will make the throttle less responsive.
Maintenance
The PERRIN blow off valve requires very little maintenance but when needed, it's very easy and quick to disassemble the blow of valve with no special tools required.
Recirculating or Vent to Atmosphere
This universal fitment has large 1.325" tube connections for easy installation. Simply disconnect the recirculatory hose and let your blow off valve vent to atmosphere on cars using speed density type ECU's (Cars with no MAF)
PERRIN Performance manufactures and supplies the finest Subaru products on the market today. Our full line of products hits every aspect of performance modification for your car. From suspension to engine performance, PERRIN makes the products which will boost your performance to the next level. Our customer service, sales, and technical staff is always available to help you with questions or concerns. From live instant chat messaging on the website, to e-mail or phone, we pride ourselves on the unique levels of customer service we provide that are simply not found elsewhere in the aftermarket industry today.
Year Fitments | Subaru WRX |
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2015 | ✓ |
2016 | ✓ |
2017 | ✓ |
2018 | ✓ |
2019 | ✓ |
2020 | ✓ |
2021 | ✓ |
WARNING: Operating, servicing and maintaining a passenger vehicle or off-road vehicle can expose you to chemicals including engine exhaust, carbon monoxide, phthalates, and lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. To minimize exposure, avoid breathing exhaust, do not idle the engine except as necessary, service your vehicle in a well-ventilated area and wear gloves or wash your hands frequently when servicing your vehicle. For more information go to P65Warnings
SKU | perPSP-TAC-615RD |
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Manufacturer's Part Number | PSP-TAC-615RD |
Brand | Perrin |
Product Type | Intake and Exhaust |
Intake and Exhaust | Turbo and Components |