FORGE Blow Off Valve for Audi A4 (B7)
Made from billet aluminium, this atmospheric diverter valve dumps the charge-air to atmosphere creating the "Whoosh" sound when the throttle is lifted.
This increases both quicker throttle response and higher clamping load to maintain boost pressure more reliably. Unlike single piston or diaphragm diverter valves, this uses counter balanced springs and dual pistons to prevent the valve from leaking air into the intake system at idle. This prevents our diverter valves suffering any of the failures associated with single piston and diaphragm type diverter valves.
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 individual’s application will be compatible with a valve that vents the charge air into the atmosphere.
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.
Photo for Illustration Purposes - May Not Reflect Actual Item
AvailabilityMost of our Forge parts are stocked and ship within 2 working days. To make sure you are not hit with unexpected delays, please email us at email@example.com.
Shipping and Returns
All car parts are sent via a tracked delivery service or courier, depending on the size and weight of the shipment.
Shipping to the UK can vary depending on manufacturer, but we advise customers to expect delivery of their order within 3-5 working days after the item has been dispatched.
If you aren't happy with your order for whatever reason, you are able to make a return within 30 days of purchase for a full refund. To find out more about our returns policy, visit our returns page
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