2 of my buddies have SRT-4s one has a downpipe and one has only an intake. I raced the one that has an intake which dynoed at 220WHP at ATP racing in Redwood city. My car has a full exhaust (except the midpipe) and an Ekutek reflash. from a 3rd gear roll I start gaining on him a little at the end of 3rd and once I go to 4th gear I'd start pulling away, by 130MPH-135MPH I'd be ahead by 2 1/2-3 car lengths. I was very surprised how quick it was stock. I'll try to post the video, if I can find someone that has a firewire port on their computer..