Higher octane gas in untuned car?
#1
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Higher octane gas in untuned car?
Anyone with experience using 95 or 100 octane gas on the track in an untuned car? I'm wondering if it'll do any good since my GR is bone stock engine wise. Going Laguna tomrw!
#3
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You will not get any power gains. It will do what Strider said, reduce knock and detonation. If I was going to the track I would mix in a little 100 octane for peace of mind but not a full tank as that would be a waste.
#4
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You are right though and I fully agree that it is a waste to run a full tank for a car that is not tuned for it. I have run a mix before and would essentially recommend the same to the OP. Mix about 3-4 Gallons of 100 Octane and then top off the rest with 91 Octane. That should provide a mixture that would get somewhere around 93-94 Octane.
#7
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Actually with only 100oct in the tank you may loose some power but it will be safe. Car needs to be tuned for 100oct. Beware of Laguna Seca gas prices - they are terrible (unlike Sonoma or Thunderhill).
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