Have you had any COT issues with yours? Were you hot lapping it at all?
Honestly without any kind of data logger it's hard to tell. I drove the car 40min there so it was good and warm, but at times had 90min of cool down between runs. It definately got some hot latps (and one point I was playing NASCAR with it since the lanes were empty!) Didn't change MPH much all day (stayed within a couple).
I would have liked to seen a bit more RPM, but I was told this is pretty normal for a 2.62 rear gear car.