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87 to 93 tune question

Old 02-19-2009, 01:31 PM
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Ato
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Default 87 to 93 tune question

So currently I have a 87 tune from Tillman Speed loaded but I want to move up to the 93. I used the 87 tune this week for the gas that was left in the tank, I just filled up with 93 with the onboard computer listing about 39 miles to empty before hand. Do you guys think I'm good to go or do I still risk pinging and detination?
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Old 02-19-2009, 01:32 PM
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5SPD07GT
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you will be fine imo
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Old 02-19-2009, 01:39 PM
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Nuke
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You're good to go. The PCM can adjust to that very minor (if any) octane difference.
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Old 02-19-2009, 01:43 PM
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acascianelli
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You're OK, flash away...

I think people are too concerned about running their tanks of lower octane fuel to the absolute minimum before flashing to a higher octane tune.
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Old 02-19-2009, 02:42 PM
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You should be good to go but if you want to be extra careful just wait till you run it down to about a half tank, fill it up and then flash it.
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Old 02-19-2009, 03:44 PM
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I was bored one day so I romped around town and got down to 4 miles to empty :P
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Old 02-19-2009, 04:06 PM
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Originally Posted by Mach View Post
I was bored one day so I romped around town and got down to 4 miles to empty :P
I've had it say 0 miles to empty. It's not good to do that, and I'll never do it again.
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Old 02-19-2009, 04:46 PM
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How big of a performance gain will you get going from an 87 to a 93 tune...

And using the right gas..
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