Perrin Subaru 08-14 WRX Black Blow Off Valve kit Recirculation Only

For those looking to improve boost control and turbo response without sacrificing drivability or triggering CELs, the Perrin Recirculating Blow Off Valve (BOV) Kit is a perfect upgrade. Designed for enthusiasts who prioritize reliability, stealth performance, and OEM-like integration, this kit maintains full recirculation while delivering faster valve response and improved boost recovery between shifts.

Unlike atmospheric blow-off valves that vent to atmosphere (causing rich conditions or stalling in MAF-based cars), Perrin’s BOV routes air back into the intake, keeping AFRs stable and the ECU happy. It's engineered with a robust brass piston housed in a CNC-machined aluminum body, offering a precise seal and consistent operation under high boost conditions. The response time is faster than the factory valve, which translates into better shift feel, reduced compressor surge, and longer turbocharger life.

The internal spring is adjustable, allowing fine-tuning for different boost levels or setups. Whether you’re running a stock turbo or a larger aftermarket unit, this BOV kit ensures reliable operation under pressure. Plus, Perrin’s signature anodized finish protects the valve from corrosion while adding a clean, motorsport-inspired look to your engine bay.

You’ll hear a subtle but satisfying “whoosh” sound on gear changes—quiet enough to remain civilized for daily driving, but sharp enough to remind you you're running a performance setup.

• Recirculating design maintains factory drivability and ECU compatibility
• Fast-reacting brass piston and aluminum housing for consistent high-boost performance
• Adjustable internal spring lets you fine-tune response for different setups
• Helps reduce compressor surge and turbo lag for smoother, more responsive acceleration
• Corrosion-resistant anodized finish adds long-lasting durability and style

CARB NOTE:

This product cannot ship to the state of California as it is not CARB compliant.