We recommend servicing the valve every 3 years or every 20,000 miles – whichever comes first.
This recirculating valve (blow-off or dump valve) is designed for BMW N20 2.0 Turbo engines with an electronically controlled bypass valve. It is recommended for vehicles where boost pressure has been increased through an ECU software upgrade, as well as for standard vehicles operating in warmer climates.
The valve is designed to address common failures of the original rubber diaphragm, which can split and cause a loss of boost pressure. A failure does not always trigger the engine warning light, as the boost pressure may still open the valve, meaning the driver may not notice the loss of power.
Forge Motorsport uses a piston design without a diaphragm that could fail, while the housing is made entirely from aluminium. The valve replaces the original unit with a pressure/vacuum-controlled piston valve, while retaining the desired original ECU-controlled opening operation.
Suitable for: BMW 1 II (F20/F21), BMW 2 I (F22/F23/F45/F46/F87), BMW 3 VI (F30/F31/F34/F80), BMW 5 VI (F10/F11).
Compatible vehicles (manufacturer data)
| Vehicle | Chassis | Years | Engine |
|---|---|---|---|
| BMW 1 Series | F20/F21 | 2012–2015 | 125i (N20) |
| BMW 2 Series | F22/F23 | 2014–2016 | 220i (N20), 228i (N20) |
| BMW 3 Series | F30/F31 | 2012–2019 | 320i (N20), 328i (N20) |
Before ordering, check that the product matches your vehicle (model, year and engine). If in doubt, write to us — we will check for you.
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