Originally Posted by kaiv
Thanks but racing around the ring in Germany with race gas or 93 octane is very different and cannot be compared to tracking in California.
For example it was 110F degrees this past weekend at Autoclub speedway. 113F at Chuckwalla. You get my point. Lukester and other ring goers don't have to worry about heat like we do here.
Also we use US 91 octane.
We have tuned a lot of M3's in CA - off hand I can't think of anyone that mentions they track their cars so I am unable to provide further information on this.