100 octane............

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11-09-2005, 01:49 AM

ilovejaysandscions

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100 octane............

can you use 100 octane on our scions? i was just wondering because i have a a company card for gas and i always see 87,89,91, and 100. i always wanted to try it, but dont know if it is ok?

11-09-2005, 02:33 AM

jmiller20874

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I'm sure your company would love to know why you're putting 100 octane into a 4 cylinder engine designed to run 87 octane when they get the bill. Save your company's money and you from having to do a lot of explaining by not doing something that'll do ABSOLUTELY NOTHING for your car.

11-09-2005, 05:14 AM

reagulator

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i wish we would be able to advance ignition timing to take advantage of increased octane. damn computers

11-09-2005, 02:16 PM

jmiller20874

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^^^ Sure would be nice, wouldn't it? But unfortunately with our stock compression of 9.6:1, just advancing the timing wouldn't be enough to gain from 100 octane. The 11:1 CR pistons that ZPI are selling would be a nice addition. I believe the OP has an xB by reading his sig so he's already using relatively high CR pistons but has no displacement, he will see some gains from a timing advance but not enough to make it worthwhile.

Damn Toyota and their hacker-proof ECU's.