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      01-24-2022, 03:02 PM   #18
iqraceworks
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Drives: 2007 335i
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Quote:
Originally Posted by studio54 View Post
Sorry if it's a dumb question, but is it possible to run V5 E40 with very high octane fuel but no ethanol?
(E40 has an octane rating of about 98)
No....it's not just about octane rating, Stoich (air/fuel mixture) for gasoline and ethanol are different. Don't run an ethanol tune with gasoline.
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