THe only thing I can think of is that its easy to mount and it will have a very minimal effect on emmissions since its way in back of the cat.bII said:
Its probably laggy. I bet its response is sort of like a centrifical supercharger but maybe even worse. I bet the maximum boost is limited due to a lack of drive energy. It probably just adds some power to big V8 engines that have a lot of torque and power anyway. I notice it uses smallish turbos, like GT35, sorta small for a V8 so maybe its doing it on mostly gas volume like the pinwheel effect we were talking about in another thread. I think this greatly reduces the drive power and thus the smallish turbo.