Cobb 02-07 Subaru XLE BPV WRX 04-17 Subaru STI / 06-08 FXT Bypass Valve

The COBB Tuning LF Bypass Valve is a compact, lightweight bypass valve designed to reliably hold high boost pressure without leaking. Its updated design with 30% reduced control volume for extremely fast venting, lightweight components for faster response, a banjo-fitting vacuum port for 360-degree hose routing adjustability, and a piston O-ring seal twice the diameter of the old design for increased seal compression and reduced wear. The updated spring and seal design provides a 60% increase in clamping force at peak boost while maintaining similar operation at idle and transient loads. Suitable for both stock and heavily modified vehicles.