The salesman filled it with 87 octane... I ran it out, and filled with 93 octane and then drove for a few days like that. Power actually felt pretty good. I then disconnected the batt, hoping for a little more, immediately noticed a power loss. Check out the a/f ratio.... A little tweaking of the a/f and timing seemed to do the trick. My uncorrected was 345 hp with some cool, dry air here. Going to the track tonight.
