I have been down the RACE FUEL route before with my Turbo Viper and 17lbs of boost.Silber tune. Ran stage 3 or 4 all season 8000 ft and up. No issues. Ran 2gallons of 110 to every tank.
Really NOT very interested in going that route again.
Its just such a PITA to make sure the HIGH octane is always there and never accidentally diluted.
not to mention the insane cost of 110 now.
Even getting 94 here in SE Idaho is all but impossible.