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Forge

Forge Motorsport FMDVF22A BMW N55 BOV/DV Upgrade - Blow Off, Diverter, Recirc/Dump/Bypass Valve Kit for Electronic Wastegate (EWG) F-Series M2 M135i M235i 335i 435i (F20 F21 F22 F23 F30 F31 F32 F33 F34 F36) - Turbo Pressure Relief/Boost Leak Fix

Forge Motorsport FMDVF22A BMW N55 BOV/DV Upgrade - Blow Off, Diverter, Recirc/Dump/Bypass Valve Kit for Electronic Wastegate (EWG) F-Series M2 M135i M235i 335i 435i (F20 F21 F22 F23 F30 F31 F32 F33 F34 F36) - Turbo Pressure Relief/Boost Leak Fix

£191.50
£201.58 £191.50
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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 FMDVF22A Turbo Pressure Relief Valve Upgrade for BMW F-Series N55 EWG

Replace the fragile factory bypass unit on your N55-powered BMW with the Forge FMDVF22A. This machined alloy, serviceable turbo pressure relief valve delivers rock-solid boost holding, quicker throttle recovery and dependable operation on both standard and mapped cars. Designed specifically for electronic wastegate N55 engines in the F-series platform, it interfaces with the factory control signal via the included plug-in loom for crisp, consistent valve actuation.

Why enthusiasts choose this Forge valve

  • All-aluminium body with a precision piston core for exceptional durability and repeatable performance
  • Fully serviceable design with interchangeable spring rates to suit increased charge pressure on tuned setups
  • Direct-fit replacement for the OEM plastic unit that is known to weaken and cause boost loss over time
  • Retains factory ECU control using the supplied harness for seamless integration and smooth drivability
  • Helps combat compressor surge, improves boost recovery between shifts and supports reliable turbo operation
  • Proven on road and track with stock hardware, Stage 1 and Stage 2 calibrations

Finish: Black

Real-world feedback

We have installed this Forge unit on multiple customer vehicles and our own development cars. Owners consistently report tighter boost control, improved response and confidence-inspiring reliability compared with the stock plastic valve.

Vehicle compatibility - N55 with electronic wastegate from July 2013 onward

  • F20 F21 M135i July 2013+ electronic wastegate
  • F22 F23 M235i July 2013+ electronic wastegate
  • F30 F31 F34 335i July 2013+ electronic wastegate
  • F32 F33 F36 435i July 2013+ electronic wastegate
  • F87 M2 2014+ electronic wastegate

Note for F87 M2 2015 to 2018 non-Competition: an additional loom is required and modification is required on the F87 M2.

Fitting service

Installation is straightforward thanks to the supplied loom and direct-fit design. For professional installation, book with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

Download the official Forge fitting instructions

Compatibility check before dispatch

We will confirm fitment prior to shipping. Add your UK registration or the last 7 digits of your VIN at checkout so we can verify that FMDVF22A is correct for your car.

Manufacturer and warranty

Manufacturer: Forge Motorsport

Warranty: Forge Limited Lifetime Warranty, non-transferable

Part number

FMDVF22A

Search-friendly terms

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