1) I think it's fuse 46
2) If you aren't tuned for that high octane it will make a difference, but not really that much. And is that leaded or unleaded? Cause leaded race gas can hurt your engine.
I had a friend who filled his SRT-4 with 100octance and said it was a bit stronger, but not worth the extra $3 a gallon more.
As far as suggestions, just work on your launch and shifting and timing.
02 Jackson Racing supercharged SVT
Current:1991 BMW 318is: Bilstein sports, H&R springs, TMS chip, UUC short shifter, dyna-max muffler