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

Wow, nothing but great things to say about outmotoring and the customer service. Aaron was great following up with any questions and delivery tracking. Very satisfied with the clear tails for my AM V8V. Will absolutely be continuing to shop here for future parts!
Keith

The owner is nice, prices are in line with others or better. My complaints are twofold. First not a blasted thing comes with any installation instructions. The Eventuri intake had excellent ones you could download, the rest had nothing. I guess you are supposed to know how to install before you buy.
Second, I have left a lot of reviews on products (most of them very favorable) and yet they don't show up under the product listing. I rely heavily on customer reviews as I have found they are generally the best gauge of the product. It has aggravated me beyond speaking that I spend the time writing a detailed review, only to never have it post. When I go to the item, it will say "no reviews for this product" and then underneath it "you have written a review for this product". Seriously?
Karen Casey

I have ordered from Aaron a couple of times. He had parts that no one, to include parts houses, had and got them to me quickly. Seriously just 2 days. Aaron and I emailed back and forth about an address change that needed to be made post order, because of a blunder on my end. He handled it and things went well. A crazy motor head, and 9 emails later Aaron had things going the right direction. Kudos to him and the team at OM!!!!
Jesse Kennamer

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