Thread: M850i E85 Tune
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      02-29-2024, 08:52 PM   #9
RJC-1
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Quote:
Originally Posted by AmooManiak View Post
Not mixing, this is a straight E85. Cary has tuned thousands of cars so I would think the research has already been done before rolling the tunes out.

It is recomended to run a gas of 93 once every 3k miles or 3 months in between. Thankfully this is an easy process with BM3.
I’ve heard mixing three gallons of E85 to ~12 gallons of 91 boosts it to ~93. This might be helpful for those without the tune etc. who want a bit more punch stock where there’s no 93.
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2019 M850i xDrive Coupe (06/19 Production)
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