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BLOW OFF VALVE |
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The FMDVMCS is a sandwich type adaptor that fits between the existing electrical solenoid and the turbo charger housing.
On the Coopers S turbo, built into the turbocharger housing, is a bypass facility. This allows charge air to be recirculated around the turbo charger from the boost side back to the intake side. This recirculation path is opened and closed by means of an electrical connection from the engine management to a solenoid that is mounted on the turbocharger housing. As you accelerate , the turbo charger vanes are spinning and boost pressure is increased, literally blowing into the engine cylinders. Then when you change gear you take you foot of the accelerator momentarily, select the next gear, and accelerate again. As you take your foot off the accelerator the throttle valve to the engine closes. The problem here is that during this process the turbo is still spinning and the boost pressure that it is producing has no where to go. (This is a bit like putting you hand over a hair dryer so the air cannot get out) What happens at this point is the turbo starts to stall, the spinning vanes slow down (incurring alot of stress) and the boost pressure drops. When you open the throttle valve again by pushing down on the accelerator (demanding more power) the turbo has lost its momentum, boost pressure and there is a pause or a "Lag" before the engine is producing the required power once again. To combat this loss of power and stress on the turbo, a recirculation or diverter valve is used. On the Mini, when the throttle valve closes, the engine management opens the recirculation route around the turbo. This gives the charge air an alternative route and allows the turbocharger to keep spinning so that when you accelerate again there is no "lag" or waiting period. This system works well and is adopted by nearly all vehicle manufacturers on turbo charged petrol engine applications. The only downside to this system is that a turbo chargers produce heat. (The hot air that leaves a turbo is cooled by passing it through an intercooler before it enters the engine. The cooler the air the more power is produced. ) By recirculating the hot air back into the intake side of a turbo the temperatures increase. This is where the Blow Off or Dump valve plays its part. By expelling the charge air to atmosphere rather than recirculating it, you do not increase the intake air temperature but you do allow the turbo to keep spinning. The side effect which is unacceptable to most vehicle manufacturers is the noise of the valve expelling the air. By fitting the FMDVMCS between the existing solenoid and the turbo housing (this involves removing only 3 bolts) the air is re-directed to atmosphere rather than recirculated.
It should be noted that the engine management also uses this valve to decrease engine power when necessary. An example of this is by the (DSC) Dynamic Stability Control system. Although you would not normally hear this occurring, when a blow off adaptor is fitted you may well hear the air being expelled when the DSC operates (going to fast around a bend for example) |
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Forge FMFSITA 2.0T FSI Switchable Blow Off Valve Volkswagen Group
A switchable spacer for the VAG 2.0 litre FSi Turbo engine which allows a choice of Blow off (loud) / Blow off and partial recirculation (intermediate) or total recirculation (quiet). This gives you the choice of exactly how loud you wish your valve to be . Please note the adjustable FMFSiTA valve is not suitable for the Audi A4 due to clearance issues - please use the FMDVFSiT for these vehicles.
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FORGE MOTORSPORT ATMOSPHERIC BLOW OFF VALVE FOR THE VAG 1.4 SUPERCHARGED ENGINES
(FMDV14TSi)
Yet another first for the Volkswagen and Audi Tuning Market from Forge ! With the introduction of the VAG 1.4 litre TSi Supercharged Engine, Forge have developed an Atmospheric Blow-Off adapter specifically designed to fit this application. Simple in execution, yet offering the desirable atmospheric blow-off valve sound, this product has been designed to be fully compatible with complexities of this engine. |
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BLOW OFF VALVE |
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05 BOV - Blow off |
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05L BOV - Blow off |
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Dump Valve ( Blow-off Valve )GReddy RS type
Inlet: 34mm
Piston size: 34mm
Working pressure: up to 1.8 Bar / +25 PSI |
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Billet Aluminum Structure
Produces Powerful and Unique Aggressive Blow-Off Sound
Comes with all installation hardware’s, as seen in picture
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Blow off Valve
Piston size : 28мм
Inlet : 24мм
Total: 90мм |
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04 BOV - Twin Piston Blow off |
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Made from billet aluminium, Forge Motorsport recirculating diverter valves dump the charge-air back into the air intake system keeping external noise to a minimum. This increases both quicker throttle response and higher clamping load to maintain boost pressure more reliably.
Comes with all installation hardware’s, as seen in picture |
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04L BOV - Twin Piston Blow off |
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Twin Piston Blow Off Valve
Produces Powerful and Unique Aggressive Blow-Off Sound
Made by AutoGauge Taiwan |
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Billet Aluminum Structure
Produces Powerful and Unique Aggressive Blow-Off Sound
Comes with all installation hardware’s, as seen in picture
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Forge FMFSITA 2.0T FSI Switchable Blow Off Valve Volkswagen Group
A switchable spacer for the VAG 2.0 litre FSi Turbo engine which allows a choice of Blow off (loud) / Blow off and partial recirculation (intermediate) or total recirculation (quiet). This gives you the choice of exactly how loud you wish your valve to be . Please note the adjustable FMFSiTA valve is not suitable for the Audi A4 due to clearance issues - please use the FMDVFSiT for these vehicles.
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Blow Off Valve Type FORGE 25mm for AUDI /VW
Color: Aluminium
Inlet: 25mm |
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Billet Aluminum Structure
Produces Powerful and Unique Aggressive Blow-Off Sound
Comes with all installation hardware’s, as seen in picture
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Blow off Valve
Piston size : 28мм
Inlet : 24мм
Total: 90мм |
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Billet Aluminum Structure
Produces Powerful and Unique Aggressive Blow-Off Sound
Comes with all installation hardware’s, as seen in picture
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BLOW OFF VALVE
Twin piston |
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Unloading valve - Blow off - Adjustable
Working pressure: up 1.8bara / +25 PSI
Material: Aluminum
Color: Polished Aluminum |
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Blow off 100.5713 - Adjustable
Part of the double acting air is released into the atmosphere part returned obratno.Preporachva for cars with flow meters.
Input / Output: 24 mm
Material: Aluminum |
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Billet Aluminum Structure
Produces Powerful and Unique Aggressive Blow-Off Sound
Comes with all installation hardware’s, as seen in picture
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03 BOV - Blow off |
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Billet Aluminum Structure
Produces Powerful and Unique Aggressive Blow-Off Sound
Comes with all installation hardware’s, as seen in picture
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Billet Aluminum Structure
Produces Powerful and Unique Aggressive Blow-Off Sound
Comes with all installation hardware’s, as seen in picture
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06 BOV - Blow off |
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Blow-off 24мм |
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BLOW OFF VALVE |
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Blow-off 24мм |
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Billet Aluminum Structure
Produces Powerful and Unique Aggressive Blow-Off Sound
Comes with all installation hardware’s, as seen in picture
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10 BOV - Blow off |
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Subaru BOV - Blow off |
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Billet Aluminum Structure
Produces Powerful and Unique Aggressive Blow-Off Sound
Comes with all installation hardware’s, as seen in picture
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Blow-off 50мм
Made in: OBX Racing Sports USA
Material: aluminium |
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BLOW OFF VALVE(FOR SUBARU IMPREZA) |
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11 BOV - Blow off |
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12-2 BOV - Blow off |
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Blow-off 76mm |
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Billet Aluminum Structure
Produces Powerful and Unique Aggressive Blow-Off Sound
Comes with all installation hardware’s, as seen in picture
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Billet Aluminum Structure
Produces Powerful and Unique Aggressive Blow-Off Sound
Comes with all installation hardware’s, as seen in picture
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Blow Off Valve Type FORGE
Twin Piston
Color: Blue
Inlet: 25mm |
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price: 76.00 GBP
No products in stock
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GReddy RS Blow Off Valve - JDM
Billet Aluminum Structure
Produces Powerful and Unique Aggressive Blow-Off Sound
Comes with all installation hardware’s, as seen in picture |
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price: 131.00 GBP
No products in stock
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Diesel BOV Kit - Blow off |
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price: 207.00 GBP
No products in stock
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JDM Parts
