Perrin Subaru Red Recirculating Blow Off Valve Kit 2008-2014 WRX

Engineered with precisely sized large inlets and outlets, the PERRIN Blow Off Valve effectively relieves pressure from the turbo without allowing the compressor to surge. Large blow off valves are not ideal, as they reduce the balance of flow and can cause too much boost to be released, lowering response. This WRX blow off valve is designed to recirculate air back to the intake track, preserving the air-fuel ratio for ideal driveability. Vent-to-atmosphere functionality may be possible, but highly recommended only on cars utilizing aftermarket Speed Density type tuning (cars without mass airflow sensor).

Features:

• Faster Response Time, Consistent Boost, and Better Driveability
• Adjustable Release Setting and Flow Control
• Direct Bolt On BOV
• No Tuning Required
• Body Material 6061 Aluminum
• Body Finish Anodize Red
• Easy Install
• 5 Year Manufacturer Warranty