A combination Diverter / Blowoff Valve for all VW / Audi 1.8 T and 2.7T (2 valves required for 2.7T).

Replace the failure-prone, plastic factory diverter valve. Unlike the OEM Bosch diverter, this Forge valve is heat resistant, and holds more boost!! Direct, maintenance-free replacement with Lifetime Warranty!

The Splitter is a truly remarkable valve that gives a combination of blow off and recirculation valve operation all at the same time and has been specifically designed for the many turbo engined applications that operate metered airflow management sysyems. This means you get all the noise of the blow off valve while retaining the compatibility with the recirculation requirements of the engine management system - so NO CHECK ENGINE LIGHTS! As a bonus, it also offers the ability to convert the valve to recirculation only mode for those times when quiet operation is required.

This valve uses a Copper and Zinc alloy piston which utilizes new sealing technology along with a variable spring preload incorporating a ratchet type top adjuster that will allow for the positive and precise adjustment to match the valve to your engine. This is achieved by using a unique single, conical, progressive rate spring that can allow for the retention of boost pressure over a wide adjustment range. This unique spring design also allows for unrestricted piston travel and flow volume regardless of the amount of pre-load adjustment added to the spring. Other manufacturers valves using cylindrical springs with adjustable pre-load often experience restricted piston travel and a reduction in flow volume.