Forge Motorsport Blow Off Valve and Kit for BMW 135/235 F20. We recommend servicing your valve every 3 years, or 20,000 miles, whichever comes sooner. It is recommended for any vehicle where the boost pressure has been increased by an ECU software upgrade and for unmodified vehicles operating in warmer climates, as a solution to the many failures that have occurred. Unfortunately the failure doesn't always result in a check engine light as the valve can still be blown open by the boost pressure, so you may not be aware that you are losing power due to this. This prevents the diaphragm from sealing.
Our alternative is a fully engineered solution offering both significantly improved reliability. Our valve is piston based, with no diaphragm to fail, and of all aluminium construction, it replaces the original unit with a pressure/vacuum operated piston valve that still also retains the desirable OEM ECU control, over valve actuation. In The Box: 1 x FMDVF20A Valve 1 x 3000mm of 4mm Vacuum Tube 1 x 100mm of 6mm Vacuum Tube 1 x 50mm of 6mm Vacuum Tube 1 x Solenoid, Bracket, and Screws 10 x Cable Ties 1 x Uprated Blue Spring 1 x 8-4-8 T Piece 1 x Forge USB Instructions 1 x Forge Keyring and Sticker. If you wish to tune this product to fit the needs of your engine, please see the spring tuning kit below.This fits the following vehicles: [car_parts_fittings]. We are a small business and as such there may be occasions when we are unable to fulfil the order due to issue out of our control so please bear with us!