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Forge Motorsport BMW N13 1.6 Turbo Blow Off Valve BOV / Dump Valve / Diverter Valve Upgrade – Vent to Atmosphere – F20 F21 F30 114i 116i 118i 120i 316i 318i 320i – CNC Billet Piston Valve Kit | Recirc Valve Delete/Replacement

Forge Motorsport BMW N13 1.6 Turbo Blow Off Valve BOV / Dump Valve / Diverter Valve Upgrade – Vent to Atmosphere – F20 F21 F30 114i 116i 118i 120i 316i 318i 320i – CNC Billet Piston Valve Kit | Recirc Valve Delete/Replacement

£201.58
£201.58
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BMW N13 1.6 Turbo Vent-To-Atmosphere BOV Upgrade by Forge Motorsport

Transform the way your BMW 1 Series or 3 Series drives and sounds with this Forge Motorsport vent-to-atmosphere blow off valve upgrade. Designed for the N13 1.6 petrol turbo engine, this precision CNC-machined alloy valve replaces the factory electronic recirculation unit to deliver sharper throttle response, a crisp turbo whoosh, and dependable performance even on remapped cars. We have fitted these on customer vehicles and the feedback has been outstanding for both reliability and sound.

Why choose this valve

  • Eliminates charge leaks caused by the stock valve’s rubber membrane, helping you hold requested boost and maintain consistent power.
  • Piston actuated design with no diaphragm to tear, engineered for long-term durability under heat and higher pressures.
  • Keeps the OEM electronic control strategy so drivability and ECU management remain as intended, with improved response.
  • Interchangeable springs included to suit standard, Stage 1 or more aggressive tunes.
  • Distinct vent-to-atmosphere sound for that authentic turbo note without compromising control.

Perfect for tuned and daily-driven cars

Whether your N13 is stock or running a remap, this upgrade is a proven fix for the common OE diverter failure that robs performance without always triggering a warning light. It is equally at home on UK roads, in hot weather traffic, or on spirited drives where heat and pressure expose weaknesses in the factory part.

How it works

This assembly replaces the original electronic recirc unit with a robust piston-based mechanism that uses a manifold reference line while retaining ECU-commanded actuation via the supplied solenoid. The result is fast, consistent valve operation under load changes, stronger sealing under boost, and a satisfying vent-to-atmosphere release on lift-off.

Vehicle compatibility

  • BMW 1 Series F20 and F21: 114i, 116i, 118i, 120i
  • BMW 3 Series F30: 316i, 318i, 320i
  • Engine: N13 1.6 turbo petrol

Box contents

  • 1 x Atmospheric valve
  • 1 x Aluminium connector
  • 1 x Length of vacuum hose
  • 1 x Uprated spring
  • 1 x Electronic solenoid

Fitting and support

Professional installation recommended. For expert fitting, book with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

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