Forge Motorsport Performance Blow Off Adaptor for Mini Cooper R55 R56 R57 N14

£62.56 Exc Tax

SKU: FMDVMCS Category: Tag:

Description

Forge Motorsport Performance Blow Off Adaptor for Mini Cooper R55 R56 R57 N14

Brand New Genuine Forge Motorsport Performance Parts & Accessories

The FMDVMCS is a sandwich-type adaptor that fits between the existing electrical solenoid and the turbocharger housing on the BMW Mini Cooper S N14 engines 2007/08(R56/57 ), Peugeot 1.6 turbo engines as found in the 207 and GTI, 208 GTI, 307, 308 and Citroen DS3.

On these engines, built into the turbocharger housing, is the oem valve facility. This allows charge air to be recirculated around the turbocharger 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 turbocharger vanes are spinning and boost pressure is increased, literally blowing into the engine cylinders. Then when you change gear, you take your foot off 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 nowhere to go. (This is a bit like putting your 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 a lot 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 turbocharged petrol engine applications. The only downside to this system is that turbochargers 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 the 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 the 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 too fast around a bend for example).

In The Box

  • 1 x FMDVMCS Adaptor
  • 3 x Socket Cap Bolts
  • 1 x Instructions
  • 1 x Forge Sticker 

This product is available in machined alloy finish only.

N14 Engine Mini

Mini R56 Cooper S 1598ccm 174HP 128KW
Mini R56 John Cooper Works 1598ccm 211HP 155KW
Mini R57 Cooper S 1598ccm 174HP 128KW
Mini R57 John Cooper Works 1598ccm 211HP 155KW
Mini Clubman R55 Cooper S 1598ccm 174HP 128KW
Mini Clubman R55 John Cooper Works 1598ccm 192HP 141KW
Mini Clubman R55 John Cooper Works 1598ccm 211HP 155KW

For other models see them in our shop;

FM207V Recirc Valve N14 Engines Cooper S 2007-10, JCW Cooper S 2007-2012. For reference please see FM207V from our webshop.
FMDVR60R Recirc Valve N18 Engines Cooper S 2011 On, JCW Cooper S 2013 onwards. For reference please see FMDVR60R from our webshop.
FMDVMCS Blow Off Adaptor Plate For 2007/8 Cooper S Turbo only FMDVMCS
FMDVR56A Blow Off Valve N14 Engines Cooper S 2007-10, JCW Cooper S 2007-2012. For reference please see FMDVR56A from our webshop.
FMDVR60A Blow Off Valve N18 Engines Cooper S 2011 On, JCW Cooper S 2013 onwards. For reference please see FMDVR60A from our webshop.

We recommend all parts are fitted by a qualified mechanic to ensure the correct fitment, though this kit does include fitting instructions

See our shop for other Forge products plus 1000s more Performance Parts

Additional information

Weight 4 lbs
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