Description
The Forge Motorsport Atmospheric Dump Valve (FMDV13) is the ultimate upgrade for Audi’s B9 platform 3.0T models, including the S4, S5, and SQ5 (2018–2024). Precision engineered to replace the factory solenoid diverter valve, this atmospheric blow-off valve offers increased reliability, performance, and audible turbo response—while integrating flawlessly with your vehicle’s ECU.
Unlike the OEM diaphragm or plastic-piston valves prone to failure and boost leaks, Forge’s unit features a fully billet aluminum body with a piston-based internal system. This ensures long-lasting durability under high boost conditions and supports tuning modifications without compromise.
This valve is solenoid-operated and designed to work seamlessly with your vehicle’s electronics. There are no check engine lights, no fault codes, and no drivability issues. It’s a true plug-and-play upgrade for drivers who demand both performance and sound.
A recirculating version (FMDV13R) is also available if you prefer a quieter or stealth performance setup.
Key Features:
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Designed for Audi B9 S4, S5, SQ5 3.0T (2018–2024)
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Atmospheric venting delivers crisp turbo “pshh” sound on throttle lift
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Eliminates OEM valve failure points that cause boost leaks
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Fully billet aluminum construction for high durability
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Solenoid-operated with OEM integration – no CEL or ECU issues
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Piston-based design allows fast actuation and compatibility with tuning upgrades
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Includes uprated spring and full installation hardware
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Service recommended every 3 years or 20,000 miles
What’s Included:
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1 x FMDV13 Atmospheric Blow Off Valve
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1 x Wiring Harness
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1 x Solenoid Assembly with Bracket and Screws
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1 x Blue Uprated Spring
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10 x Cable Ties
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2000mm Length of 4mm Vacuum Hose
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1 x Installation Instructions
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1 x Forge Motorsport Keyring
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1 x Forge Sticker
Vehicle Fitment:
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2018–2024 Audi S4 (Base, Premium, Premium Plus, Prestige – 3.0T)
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2018–2024 Audi S5 Coupe & Sportback (Base, Premium, Premium Plus, Prestige – 3.0T)
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2018–2024 Audi SQ5 & SQ5 Sportback (All Trims – 3.0T)
