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Forge Motorsport are proud to bring you the full range of products from:

Forge Tuning GIAC Software Tuning
Silicon Hoses Hose Technik Scorpion Exhausts

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Customer Comments

'I would just like the thank your director for the advice on the the help he gave me when purchasing a dump valve for my Golf GTI. After phoning Turbo Technics in Durham and not getting the advice I was after I got it from you and with prompt delivery. The item worked superbly, and I also found a split in the rubber that your director said I should see to so I followed his advice and purchased that as well and now my car drives as expected - Thanks again!'

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Dump Valve for Subaru Impreza MY 01 onwards including the 2009 GR STi

Dump Valve for Subaru Impreza MY 01 onwards including the 2009 GR STi
Alloy Atmospheric Ram Dump Valve available to fit the Impreza 2001 onwards models including the 2009 GR STi†

Made from billet aluminium, this atmospheric diverter valve dumps the charge-air to atmosphere creating the "Whoosh" sound most commonly associated with rally cars when the throttle is lifted. This increases both quicker throttle response and higher clamping load to maintain boost pressure more reliably.

Dual-Piston Atmospheric Valves and Valve Fitting Kits

All Forge Motorsport Dual-Piston†Atmospheric Valves have been designed and built with the intent of venting 100% of the residual charge air remaining in your†forced induction†system to the atmosphere at throttle lift.

While we have incorporated many elements into the design of the Dual-Piston†valves to aid in their compatibility with mass air-flow sensor equipped vehicles, we cannot always guarantee that each individualís application will be compatible with a valve that vents the charge air into the atmosphere.

Forge Motorsport nor any of itís Authorised Distributors can assume any responsibility for any adverse effects resulting from the installation of this valve onto a vehicle whose engine-management-system, whether factory or aftermarket,†is not capable of compensating for the loss of metered air through a vent-to-atmosphere valve such as this.


For a sample of a Forge valve fitted to a Subaru Impreza please click here (120k WAV format)

To view a spring tuning kit for this valve click here
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PRODUCT SPECIFICATIONS
We reserve the right to alter product specification without notice, but only in line with our company policy of continuous improvement.
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