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Perrin Blow Off Valves SUBARU

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Fitments

SUBARU
More Information Year Model SubModel Cylinders Liter Aspiration Eng Desg. Fuel Notes
Click For More Info 2002 - 2007 IMPREZA WRX
WRX LIMITED
WRX TR
ALL ALL ALL ALL ALL
Click For More Info 2004 - 2007 IMPREZA WRX STI
WRX STI LIMITED
ALL ALL ALL ALL ALL
Click For More Info 2008 - 2014 IMPREZA WRX STI
WRX STI LIMITED
WRX STI SPECIAL EDITION
ALL ALL ALL ALL ALL
Click For More Info 2005 - 2013 LEGACY ALL ALL 2.5 T EJ255 ALL
Click For More Info 2015 - 2016 WRX ALL ALL ALL ALL ALL ALL
Click For More Info 2015 - 2016 WRX STI ALL ALL ALL ALL ALL ALL

Product Description

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)

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