Forge Motorsport Atmospheric Dump Valve for Audi RS4 B9 and RS5 F5
SKU: FMDV27A
Stop boost leaks on your Audi RS4 or RS5 with the Forge FMDV27A Valve Kit. It is made of strong alloy and gives you a great blow-off sound.
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Fast UK Delivery
Delivered in 2-3 Business DaysFast UK Delivery on all Orders, please see delivery information.
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30 Day Money Back
GuaranteeAll returns must be postmarked within fourteen (14) days of the purchase date. All returned items must be in new and unused condition, with all original tags and labels attached.
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Keep your 2.9 TFSI engine running safe and strong. The Forge Motorsport Atmospheric Dump Valve Kit (FMDV27A) is built just for the Audi RS4 B9 and RS5 F5. The standard factory valves often break when the boost goes up. Forge uses strong billet alloy and a metal piston to fix this forever. It connects straight to the car computer with a special harness. You get no warning lights, just a solid drive and a sporty "whoosh" sound.

Key Features & Benefits
- Very Reliable: Uses a strong metal piston instead of weak rubber.
- No Fault Codes: Comes with a wiring harness so the car stays happy.
- Great Sound: Vents air outside to make a cool blow-off noise.
- Fast Action: Opens quickly to protect your turbos from damage.
- Full Kit: Contains two valves, wire harness, tubes, and springs.
Installation & Workshop Services
These twin valves require careful wiring. We highly advise a professional fitting. If you do not want the loud sound, look at the Forge FMDV27R Recirculating Valve. Our mechanics at MGM Leeds can install this kit cleanly.
Download the Installation Instructions
Contact MGM Leeds for Installation

Compatible Vehicles
This twin valve kit fits the 2.9 TFSI V6 engine in these cars.
| Make | Model | Engine |
|---|---|---|
| Audi | RS4 (B9 Chassis) | 2.9 TFSI V6 |
| Audi | RS5 (F5 Chassis) | 2.9 TFSI V6 |
Important Note: This kit is only for the RS4 and RS5. It will not work on S4 or S5 cars, because they need a single valve.
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