All the benefits of our piston design, but with a less audible 'whoosh'.  The DV30 was originally designed as a direct replacement for the factory fitted Bosch dump valve found on a wide variety of cars.  The Bosch valve is made of plastic, contains a rubber diaphragm and is known to fail when subjected to too much boost pressure or excessive temperatures.  The DV30 is the perfect choice for a standard car or fire-breathing 550+ BHP tuned vehicle, capable of withstanding huge amounts of boost with its high temperature piston internals and CNC machined body.  As the DV30 is designed to direct the dumped boost back into the air filter or airstream, it is generally speaking 'silent' in operation and can lleviate any annoying 'fluttering' noises in many 'Bosch' equipped applications.

Our DV30 valve is a direct replacement for the following vehicles and generally require no fitting kit (some vehicles may require new hose clips).

Will fit the following vehicles:

Audi S2 Quattro

Audi TT 1.8 20v Turbo (185/225 bhp models)

Audi A3/S3 1.8 20v Turbo

Audi A4 1.8 20v Turbo

Audi S4 2.7 30v Twin Turbo (2 valves)

Fiat Uno Turbo Mk1/Mk2

Fiat Punto GT

Fiat Coupe 16v/20v

Ford Sierra/Escort Cosworth 2wd/4wd

Ford Focus RS

Lancia Delta incl. HF & Integrale 8v/16v

Maserati - Most Bi-Turbo models

Peugeot 406 SRi Turbo 8v

Porsche 911 Turbo

Porsche 944 Turbo

Renault 21 Turbo

Renault GTA V6

Saab - Most 900/9000 models

Seat Leon 1.8 20v incl. Cupra

Volvo 440/480/740 Turbo

Volkswagen Golf Mk4 1.8 20v Turbo

Volkswagen Passat Mk4 1.8 20v Turbo