What octane should I run

Sr4440 said
I have had guys show up at the dyno with 2 and 3 different fuels, and see what works best. The only caution I would add is, each fuel has a different specific gravity and that effects the A/F slightly.

Thanks,
That's most likely what I'll do is 3 different fuels.
We measured specific gravity 1st thing last year on my fuels before testing.