We tried that, but it was very difficult to do. You have to spin the tire up to ten miles per hour, guess I never got it up that fast. After the SI Ecu modification the ESP button actually shut off my esp completely. You can always give the tire spinning a shot, but the guys as the dyno will laugh their azzes off at you, I didn't care though, I wanted my dang dyno. But I can save you the time, depending on the dyno you are probably making between 180-200 whp. On a realistic dyno its more like 180.