Forge Turbo Blow-off Valve Adapter
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Forge Turbo Blow-off Valve Adapter Forge Turbo Blow-off Valve Adapter Forge Turbo Blow-off Valve Adapter

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Forge Turbo Blow-off Valve Adapter

SKU:  FMDVMCS
WEIGHT:  2.00 lbs
brand: Forge Motorsport
Our price: $94.95
 
qty
 
Average customer rating:
5 out of 5
(based on 403 votes and 0 reviews)
 

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Details

The FMDVMCS is a sandwich type adapter 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 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 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 adapter is fitted you may well hear the air being expelled when the DSC operates (going to fast around a bend for example)

copy and paste for instructions:
http://www.forgemotorsport.com/media/fmdvmcs(2).pdf

Fits these MINI models:
R55: 2008-2010 Clubman: Cooper S
R56: 2007-2010 Hatchback: Cooper S
R57: 2009-2010 Convertible: Cooper S

Does not fit 2011 and newer MINIs.

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Customers' comments

I have ordered many items from Outmotoring in the past (I live in London) and the service they have given me has always been first class. If you have an issue with regard to an item or order, all you have to do is email them and they will always try to help you out and resolve the problem. I would recommend them for any of your Mini accessories. Eddie
Eddie Michael

Order #110769
I was a little disappointed after speaking with Aaron today about my order. I placed an order for two items and was sent an email with a tracking number. Got one of the items today as tracking number stated. There was a note in the package that the other item was being shipped from another warehouse. There was no mention of this when I received the email with the tracking number. Then when I contacted Outmotoring about this. Aaron told me he would try and get me a tracking number for the other item.Then could not verify when the item would ship. Would have been nice to know that it would be shipping from some where else in the original email.
Justin Montoya

I live in Sydney Australia and 8 have to say I’m very impressed.
I have ordered numerous items and the customer service and delivery speed is second to none.
Keep up the great work Outmotoring.
Mark

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