Originally posted by IndyRacer
Thanks for all the replies. I finally found a fuel company about 20 miles from home that sells Sunoco GT Plus unleaded. It is 104 octane and 4.85% oxygenated. Gonna mix that 50:50 with premium unleaded for my next trip to the drag strip. Should give me a little safety margin against detonation without worry about the cats and O2 sensors.
That is a good fuel. I have used it before. You can run it straight.
Set boost low like 10psi
Drive 20 miles and 4 or 5 restarts
Toss in race fuel
Turn boost back up to 15-16 psi.