i have heard a lot of cars running around town that make the telltale hiss after a shift of a blow-off valve. the only problem is that i have noticed alot more recently on cars that dont seem to be turbo'd. like a ~2000 eclipse which to my very limited knowlege doesnt have an aftermarket turbo yet. is there some mod or something that causes a car to make that noise when the throttle is released to simulate a turbo. i could very well be wrong and all these cars have turbos. by the way, what is a wastegate? excuse my relative car ignorance, but im still learning alot. thanks.
