Description
Eliminate OEM boost leaks and elevate performance with the Forge Motorsport Atmospheric Blow Off Valve – a precision-engineered upgrade for BMW models equipped with the N20 2.0L Turbocharged engine. This valve is a direct replacement for the factory electronically controlled bypass valve and is designed to resolve a common failure point in the OEM unit: the rubber diaphragm.
BMWs such as the 220i, 228i, 320i, and 328i (F20, F30, and F10 chassis) are prone to losing boost pressure due to OEM valve diaphragm failure—often without triggering a check engine light. Forge’s fully machined piston-type valve eliminates this issue entirely with an all-aluminum construction that delivers both improved reliability and a distinctive atmospheric “blow-off” sound.
Ideal for vehicles running ECU remaps or increased boost pressure, as well as for stock cars in hot climates, this upgrade ensures consistent turbo performance and long-term durability. The valve retains full OEM ECU control of the actuation process and is fully serviceable—recommended every 3 years or 20,000 miles.
Please note: This valve is not compatible with BMW B38, B48, or B58 engines.
Features:
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Direct replacement for OEM electronic bypass valve
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All-aluminum construction for enhanced durability
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Piston-based design – no diaphragm to fail
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Maintains OEM ECU valve control
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Provides a sharp, atmospheric venting sound
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Ideal for tuned and stock N20 engines
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Includes full fitting kit and instructions
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Covered by the Forge Motorsport Lifetime Warranty
Vehicle Fitment:
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2014–2016 BMW 220i (Base)
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2014–2016 BMW 228i (Base)
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2014–2016 BMW 320i (Base, M Sport)
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2012–2016 BMW 328i (Base)
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2013–2015 BMW 328i (M Sport)
Engine Code: N20 2.0L Turbocharged I4
Upgrade your BMW’s turbo reliability and performance with confidence—backed by Forge Motorsport’s proven engineering and lifetime warranty.
