Boomba Racing 2004-2021 Subaru WRX STI Recirculating Bypass Valve [BPV]

This high-performance recirculating bypass valve is precision machined out of aircraft grade billet aluminum. It features an internal brass piston design and is pressure tested to withstand over 70psi, allowing it to complement even the most aggressive turbo builds. Spring pre-load determines the pressure differential required across the piston before the BOV opens and releases the pressurized intake charge. Designed to be a replacement for the OEM bypass valve, it is available in 4 different colors.

Key Features:

• Larger cross section compared to stock
• 100% recirculating
• Higher flow
• Pressure tested to 70 PSI
• Easy install
• No need for re-tune

Installation is simple, and all mounting hardware is included.