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View Full Version : next fill up with vette

Montehall
10-08-2015, 1:35pm
http://img.photobucket.com/albums/v257/Wilson1911/20151008_134957_zpsy6bmwqnx.jpg

What's the worst that could happen?
marrepka
10-08-2015, 1:55pm
5417
Datawiz
10-08-2015, 2:06pm
Your computer is not tuned for it, it's going to run like shit.
ZipZap
10-08-2015, 2:10pm
Worse gas mileage and no better performance? :P

Your computer is not tuned for it, it's going to run like shit.

...and your eyes will burn.:seasix:
Montehall
10-08-2015, 2:14pm
Your computer is not tuned for it, it's going to run like shit.
No computer.

No way on earth would i pay $8.49/gallon; but out of curiosity, couldn't I fill it with the 100 octane and just adjust the timing?
Datawiz
10-08-2015, 2:15pm
No computer.

The car still has to be tuned to accept race gas. :yesnod:
RedLS1GTO
10-08-2015, 2:23pm
No computer.

No way on earth would i pay $8.49/gallon; but out of curiosity, couldn't I fill it with the 100 octane and just adjust the timing?

Theoretically, yes. You could throw some timing at it and let it rip.

Question is... how much timing. Pretty sure I wouldn't take a guess at it without a wideband.

I agree with Waco. It would run fine... but gain nothing.



EDIT: I just saw my response was pretty much identical to the 1 just before it. Could have saved myself some time by just posting :iagree:
markids77
10-08-2015, 9:20pm
Race fuel exhaust sure smells nice though.
Montehall
10-08-2015, 9:21pm
Since we are on the subject... I do exclusively use the 91 ethanol free, and when I originally set the timing, I was using regular 87 octane. Would I gain anything from a retune?
Steve Austin
10-08-2015, 9:28pm
Since we are on the subject... I do exclusively use the 91 ethanol free, and when I originally set the timing, I was using regular 87 octane. Would I gain anything from a retune?

You could give it a couple degrees advance. That should get you some power and some gas mileage. Just dont go too far and make it spark knock. In the old days we would tune them like that. Crank in the advance until it knocked or got hard to crank, then back it up 2 degrees.