We recommend servicing your valve every 3 years, or 20,000 miles, whichever comes sooner
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. All Forge Motorsport Single-Piston and Diaphragm 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.
Forge Motorsport nor any of it’s 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.
Fitment Guide: Suitable for ALL turbo cars without an Air Flow Meter
Please select whether you would like a black or polished silver valve using the options above.
In The Box:
1 x FMDV001 Valve
1 x Forge Sticker
If you wish to tune this product to fit the needs of your engine, please see the spring tuning kit below.