I use to be a big turbo fan. I was researching them, and was planning on making my own JY setup. But I have kinda changed my mind since the 03 Cobra came out. Seeing what people can do with a blower is pretty amazing. The lag you get form a turbo is also what has tured me off of them. Same goes for centri blowers. There is absolutely NO lag whatsoever in a positive displacement blower. In drag racing this might not be as much of a problem, since you are always in the higer RPMS for the most part, but for AutoX and road racing, you need that low end grunt to get you out of corners. ANd plus, low end torque is what makes a car fun to drive...as in, you don't have to drive it like you hate it to get into the boost and go fast.