All that will do is keep you from getting enrichment under boost. You need a certain amount of fuel to keep your car going a given speed. If you are making say 5lbs of boost on the highway, the AFC is giving the engine enough fuel to go with it. If you disconnect that, you will just end up having to give it more throttle to make up for the loss of the automatic fueling the AFC is taking care of. I cant see how you will get any better mileage at a constant speed. Maybe around town you would see a gain, but you would be down on power as you would have no fuel to go with boost, and probably not be able to build much boost, as fuel=heat & engery which makes drive pressure. Thats what spins the turbo.
Jason
|