Managed to get my car to reduce power during autocross runs today. I wasn't full send my first run as I had a very green novice riding shotgun, and it was a really long course I needed to learn. 2nd, 3rd, 4th runs, power was cut to 30s about 70-75 seconds into the run. Looks like that happened at around 108F cell temp. Car auto cooled battery down to 96F as I drove the 1/2 mile back to grid, then stopped cooling them. Bah, won't be able to do laps there (NCCAR) like this. For some perspective, I was 0.4seconds slower than an M3P with all the good autocross mods. He did say that he was having a bad day, though...