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Forge Motorsport Atmospheric Blow Off Valve for BMW N20 2.0 Turbo Diverter/Dump Valve Upgrade, Direct Replacement | F20 F22 F23 F30 F31 F34 F10 F11 | 125i 120i 220i 225i 228i 320i 328i 520i 528i

Forge Motorsport Atmospheric Blow Off Valve for BMW N20 2.0 Turbo Diverter/Dump Valve Upgrade, Direct Replacement | F20 F22 F23 F30 F31 F34 F10 F11 | 125i 120i 220i 225i 228i 320i 328i 520i 528i

£215.49
£215.49
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Heads-up on cancellations & returns: if you cancel an order or return an item, you won't get back 100% of what you paid. We apply a 10% restocking fee, the outbound shipping is non-refundable, and we have to pass on Shopify / PayPal payment processing fees; these aren't returned to us when we refund you. International orders also lose on exchange-rate spread in both directions. If the original packaging is damaged or missing, a reboxing charge applies. For international orders specifically, if you refuse to pay our shipping invoice or supply a prepaid label after placing the order, the same deductions apply. We're upfront about this — please be sure of your purchase before ordering.

Forge Motorsport Vent-to-Air BOV for BMW N20 2.0 Petrol Turbo

Transform throttle response and boost consistency on your BMW with this Forge Motorsport vent-to-atmosphere BOV designed for the N20 2.0 petrol turbo engine. It is a direct swap for the stock recirculation unit and keeps the car’s original electronic control, delivering stronger boost holding and that addictive turbo whoosh under lift-off.

Why switch from the factory valve

The OE DV uses a rubber membrane that can split under heat and higher boost, especially on tuned cars. When it degrades you can suffer power loss, lazy spool and inconsistent performance without any warning lights. Forge’s piston-operated design removes the diaphragm entirely to help stop charge pressure leaks and keep your turbocharger working at its best.

Highlights

  • Piston operated vent-to-air BOV - no diaphragm to fail
  • All aluminium body for durability and heat resistance
  • Direct replacement for the N20 electronic DV - plug-in control retained
  • Great for remapped, Stage 1 and Stage 2 builds, and a robust upgrade on standard cars
  • Improves boost stability and helps reduce compressor surge
  • Crisp turbo sound on lift for an authentic performance feel

Compatible BMW models - N20 engine

  • F20: 125i, 120i
  • F22 / F23: 220i, 228i
  • F30 / F31 / F34: 320i, 328i
  • F10 / F11: 520i, 528i

Note: not suitable for B38, B48 or B58 engines.

Real world results

We have fitted this Forge unit to multiple N20 cars and it works. Stronger boost holding, sharper off-throttle response and a clean vent-to-air note. Our customers love the reliability upgrade and the sound, and we do too.

Fitting and support

Professional installation available at MJ Modifications in Warwickshire. For a quotation and booking email info@mjmodifications.co.uk. We are happy to advise on suitability for your specific model and tune level.

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