Good point, Rodger. From what I've read in books about turbo theory, it's the heat energy that spools the turbo, not the air moving through it. I would think you'd loose a lot of energy beteern the head and the rear of the car.
That said, there are plenty of people using the STS kit and making good power... but I don't know what type of lag they see. I would think that would be the biggest detriment.
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