alcohol/methenol
I crew on a Blown injected Alcohol Hemi Dragster and we squirt gas into the hat to start it. It only takes a little to get it going and then hold on. Runs much cooler than on gas and yes the Air becomes your tuning concerns. Just keep good records on your runs and what pill size you use to what air/altitude and you will always know what to do and what to dial. It really is a good system and way to go. Makes warm-ups smell great too. :-)