I autocross an 04 6 speed about every other weekend. Depending on the course layout, I would say I hit the rev-limiter about every other event. I also have a GTech Road Racer computer, and view the data after every race. For both first and second gear, the limiter kicks in at about 6150. This is a bone-stock XFire, with no mods. There are no issues, other than fuel being cut in a choppy manner about 4 times per second until the RPMs are reduced, or you up shift. Tough car. I work it pretty hard, and it has responded well. Lots of folks want to get a close look at our car, after seeing it race.