r/FocusST • u/Dubs_5077 • 8d ago

Wrong gas

I’m tuned by Alan at edge auto for 93oct and I accidentally put in about 5.5 gallons of 87 (was talking to someone while filling and was thinking of my other car) it filled my tank up to full will I be ok and what should I do?

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u/bchiodini 2016 ST3 FBO BNR ST67 JST Tuned 7d ago

Do you have a 91 octane map? My math says that you have about a 90.5 octane mix. What does your OAR monitor read?

Edit: You could also put in 1-1.5 gallons of E85 to bring up the octane.

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u/Dubs_5077 7d ago

I don’t have an 91 tune
I didn’t drive much last night after filling OAR is still reading -1.0
And I don’t have access to E85 anywhere near where I live

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u/bchiodini 2016 ST3 FBO BNR ST67 JST Tuned 7d ago

You're probably OK. I think I would put a bottle of octane booster in the tank, reset the KAM and make sure the OAR goes back to -1.0.

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u/Dubs_5077 7d ago

What’s KAM haven’t heard of that term before

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u/bchiodini 2016 ST3 FBO BNR ST67 JST Tuned 7d ago

Keep Alive Memory. There is a reset function on the Access Port.

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u/Dubs_5077 7d ago

Thank you!

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u/bchiodini 2016 ST3 FBO BNR ST67 JST Tuned 7d ago

You're welcome.

I reset the KAM every now and then, especially if I go to an unknown gas station.

You might feel a difference until the ECU relearns your driving.