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06-05-2020, 12:17 PM
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#30
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Drives: G05 45e, 997.1 & 991.1 GT3s
Join Date: Jul 2014
Location: SF, CA
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Quote:
Originally Posted by Doubledingo
No problems for me. I ran 20% ethanol in my M5 for 2 years without an issue. I am now doing the same in my M6. There is significant performance difference for both cars not running E20. Both cars have Mission stage 1 tune. I have never gone beyond 20%.
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Interesting data point.
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