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Tuned on 93 octane, moving to area with 91

It's been a long *** time since I posted here! So my Z was tuned on 93 octane by Uprev in Austin a few years ago. I'm moving to a

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Old 04-12-2019, 06:22 PM   #1 (permalink)
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Default Tuned on 93 octane, moving to area with 91

It's been a long *** time since I posted here!

So my Z was tuned on 93 octane by Uprev in Austin a few years ago. I'm moving to a new city for the next 3 years where the highest grade fuel available is 91. I don't have a 91 octane map to switch to.

Will the ECU adapt to the lower octane rating and pull timing until it is running safely? I'd rather not go back to Uprev to get a 91 octane map if I don't have to since they are 5 hours away and $ is tight.

Thanks for your wisdom folks
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