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So the concern and risk with running on track with an E40 mix and running lean is real since you went from 47% down to 30%-ish to be safe and correct the problem?
"I was hitting a knock due to running her lean AF! I immediately went into the paddock, added some Sunoco straight no ethanol fuel at $14/gallon and the ethanol content dropped to 30-ish percent."
Do you have any on track experience running consistently with an E40% mix.
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