My car was tuned by Seb (thanks!) and I have gotten the knock indicator to flash occasionally on 91 octane. Practically speaking, however, I almost never run 91. I usually run ~95 on the track in the morning, increasing progressively to 101 by the end of the day. Importantly, I've never triggered the knock sensor in probably 1000 miles on the track running at 95+ octane.
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2017 Corvette Z06 7MT | 1LE | Stage 3 | DSCSport
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