A Pair of Forge Motorsport Recirculating valves for the Audi RS4 B9. This set comprises a pair of our solenoid operated valves together with a custom made wiring harness, that integrates seamlessly with the OEM electronics and results in absolutely no fault codes, no check engine lights, and no detriment to the performance of the vehicle in any way. They are engineered to remedy the failure issues experienced with the OEM solenoid valves when their diaphragm may rupture which would effectively result in a boost leak. Our valve uses full billet alloy construction with a piston based internal design that provides for significantly improved reliability over the OEM valves along with lightning fast response.X2 Recirculating valves O Rings for valve sealing Vacuum Tubing Solenoid Wiring Harness Cable Ties Bracket and Hardware Uprate Springs (one for each valve). The item "Forge Motorsport Atmospheric Blow Off Dump Valves for Audi RS4 B9 2.9 T" is in sale since Saturday, July 11, 2020. This item is in the category "Vehicle Parts & Accessories\Car Tuning & Styling\Air Intake & Induction\Performance Air Filters". The seller is "haz_motorsport" and is located in GB. This item can be shipped worldwide.