All off turning everything off was worth almost 1 second on the back straight alone. I went from a 2:06.1 to a 2:04.4 by shutting everything off. I found ptm 5 to be intrusive even on warmed up tires. Ptm 5 doesn’t help if things go bad anyway so if you’re ok running 5 you should be able to turn off. On the first exit out of oak you can hear me slide like a mofo as I over did it rotating with throttle.
Interesting info. I always ran my c5z with everything off on track, Never had a problem. I’ll have to experiment, first day on track in the Z for me is April 23. Can’t wait.