93/10% vs 91, will it hurt my car at the track

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05-30-2009, 12:32 AM

jeff_man

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93/10% vs 91, will it hurt my car at the track

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Originally Posted by jeff_man

more of a general tuning question. Dallas gas is 93oc with up to 10% ethanol, if i get gas in Oklahoma they only sell up to 91oc. what would i do? would i have to have a different map for every gas types or are they close enough to not have to worry about blowing up at 10psi 11psi peak 6k-7krmp (mp62 supercharger)

looking at getting a adaptronc and this is one of my mayor concerns about tuning my car and running more then my power cards.

05-31-2009, 10:00 PM

Joe Perez

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Worst-case scenario, if you're really tuned to 10/10ths, you can just pull a few degrees of timing when you find yourself in 91 Country.

06-01-2009, 12:03 AM

hustler

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we're going to find MBT or detonation, and back out 2* in either scenario. Then if you want to run the 91-octane we'll pull 3 degrees out and listen for detonation with det cans.