Blow Off Valves

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FORGE FMDVN20A Blow Off Valve BMW 320i.328xi.N20-n26 Engine Photo-0 FORGE FMDVN20A Blow Off Valve BMW 320i.328xi.N20-n26 Engine Photo-1
FORGEFORGE FMDVN20A Blow Off Valve BMW 320i.328xi.N20-n26 Engine
AED 1,643.00
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FORGE FMDVK04D Upgraded Recirculation Valve - Top Vacuum Port GM HHR, Sky, Solstice Photo-0
FORGEFORGE FMDVK04D Upgraded Recirculation Valve - Top Vacuum Port GM HHR, Sky, Solstice
AED 1,142.25
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FORGE FMDVR56A Blow Off Valve MINI COOPER S R56/57
FORGEFORGE FMDVR56A Blow Off Valve MINI COOPER S R56/57
AED 1,751.77
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FORGE FMDVPORV8 Pair Of Piston Recirculation Valves PORSCHE Cayenne 4.5 V8 Turbo
FORGEFORGE FMDVPORV8 Pair Of Piston Recirculation Valves PORSCHE Cayenne 4.5 V8 Turbo
AED 2,128.80
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FORGE FMFK024 Turbo Blow Off Valve Fitting Kit FORD Fiesta RS Turbo
FORGEFORGE FMFK024 Turbo Blow Off Valve Fitting Kit FORD Fiesta RS Turbo
AED 627.79
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FORGE FMSPMERC Blow Off Valve Adaptor MERCEDES-Benz A180
FORGEFORGE FMSPMERC Blow Off Valve Adaptor MERCEDES-Benz A180
AED 827.74
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FORGE FMDV008P2 Fast Response Piston Recirculation Valve X 2 PORSCHE 996 Photo-0
FORGEFORGE FMDV008P2 Fast Response Piston Recirculation Valve X 2 PORSCHE 996
AED 2,288.65
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FORGE FMDVRMA Blow Off Valve Direct Turbo Fitment RENAULT Megane RS250 Photo-0
FORGEFORGE FMDVRMA Blow Off Valve Direct Turbo Fitment RENAULT Megane RS250
AED 1,400.55
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FORGE FMFSITVR Vacuum Operated Valve AUDI A3 1.8/2.0 Turbo Photo-0 FORGE FMFSITVR Vacuum Operated Valve AUDI A3 1.8/2.0 Turbo Photo-1
FORGEFORGE FMFSITVR Vacuum Operated Valve AUDI A3 1.8/2.0 Turbo
AED 1,557.63
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FORGE FMFSITAT Blow Off Valve Kit VAG 1.4T 1.8T 2.0T Engines Photo-0 FORGE FMFSITAT Blow Off Valve Kit VAG 1.4T 1.8T 2.0T Engines Photo-1
FORGEFORGE FMFSITAT Blow Off Valve Kit VAG 1.4T 1.8T 2.0T Engines
AED 1,557.63
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FORGE FMDVTUN Spring Tuning Kit Photo-0
FORGEFORGE FMDVTUN Spring Tuning Kit
AED 473.61
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PERRIN PSP-TAC-615RD Recirculating Blow Off Valve Red for SUBARU WRX (VA) 2015–2017 Photo-0
PERRINPERRIN PSP-TAC-615RD Recirculating Blow Off Valve Red for SUBARU WRX (VA) 2015–2017
AED 1,296.04

Choosing the Right Blow-Off Valve: Sound vs. Performance

A performance blow-off valve (BOV) or diverter valve (DV) is a critical component for any turbocharged engine. It protects your turbo from damaging compressor surge and can improve throttle response. The choice depends on the sound you want and, most importantly, your car's engine management system. This guide will help you choose correctly.

Step 1: Atmospheric vs. Recirculating — The Critical Choice

This is the most important decision you will make. Use our "Product type" filter to find the right type for your car:

  • Atmospheric (VTA): Vents boost pressure to the atmosphere, creating the classic loud "pshhh" sound. Warning: On cars with a Mass Airflow (MAF) sensor, this can cause the engine to run rich between shifts, leading to stumbles or stalling. Best for cars with a MAP sensor or custom race tunes.
  • Recirculating (Bypass/DV): Recirculates the air back into the intake system pre-turbo. This is the OEM-style operation, offering quiet performance and 100% compatibility with all engine management systems, including those with sensitive MAF sensors.
  • Hybrid (Dual-Port): The best of both worlds. These valves recirculate a portion of the air and vent the rest to the atmosphere, offering a noticeable sound without the major issues of a full VTA valve on a MAF-equipped car.

Step 2: Vehicle-Specific Kit vs. Universal Valve

Your choice depends on your project's complexity:

Type Best For Installation
Vehicle-Specific Kits Most tuned street and track cars (e.g., VW GTI, Subaru WRX, Nissan GTR) Direct bolt-on, all hardware included for a simple installation.
Universal BOVs Custom turbo builds, race cars Requires selecting and welding a compatible flange to your intercooler piping.