Aviation gas is formulated for low rpm engines at higher altitudes and does not have the BTUs race gas can produce. It sure is better than pump 93 octane that's for sure. It has very different specific gravity also that must be accounted for when tuning. [url=http://www.automotiveu.com/racevsav.htm][/url]
Anyone know what this is?

I'm turning 2300 rpm and it's almost redlined on 100LL!
http://i21.photobucket.com/albums/b260/challenger19711/After%2012-8-14/IMG_52541.jpg

Last edited by Challenger 1; 04/07/15 08:31 PM.