Forge launches Porsche Cayenne V8 Turbo dump valves

Gloucestershire-based Forge motorsport has launched an impressive pair of dump valves for the Porsche Cayenne V8 Turbo. The units are matching recirculation type valves that have been designed as direct upgrades for the relatively flimsy factory parts. These components have been beautifully designed and precision CNC-machined to offer a simple and easy fitment in place of the originals.

Each unit is entirely hand-fabricated by Forge’s time-served craftsmen here in the UK, and uses motorsport-quality materials and fabrication methods to create a unit which is both hugely effective and aesthetically pleasing at the same time.

The most common complaint on the OEM valve is a split diaphragm preventing the valve from opening fully, or not at all. This doesn’t always result in a check engine light, as the valve can still be blown open by the boost pressure. Forge’s engineers have seen many valves with this problem during testing. The other common problem is that the diaphragm itself is made from very thin material that can go brittle with heat cycles, and eventually fail. This may prevents the diaphragm from sealing correctly, causing the same problems as mentioned above. This particular failure has also been known to result in the valve falling apart upon removal from the turbo, though in extreme cases, bits of plastic can enter the turbo and damage it.

Forge’s alternative is a fully engineered solution offering both significantly improved reliability .The new vales are piston based, with no internal diaphragm to fail. Being of all aluminium construction, it replaces the original unit with a pressure/vacuum operated piston valve that still also retains the original function, but with a much more reliable action. This design of valve has been proved on the competition scene for many years. The spring is interchangeable for different levels of boost, making it perfect for vehicles that have been tuned or are running software upgrades.

Priced from just £209.54 excluding VAT per pair, the Forge valves looks as well as they perform. An essential upgrade for any Cayenne!

For more information or to buy this part online, visit forgemotorsport.co.uk.