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      09-27-2018, 06:59 PM   #181
Tricki
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Australia
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Drives: BMW M2 Comp
Join Date: Jun 2012
Location: Melbourne Australia

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Quote:
Originally Posted by 6erLover View Post
Quote:
Originally Posted by BuzzE46 View Post
On stock fuel pump u can mix race gas or e85?
Yes, to a point.
30% Ethanol is usually "the limit", but you'd have to find it out yourself by trial and effort. My last car 640i was fine with allmost half a tank of E85 and rest 98 (93). My current M2 doesn't handle ethanol nearly as well, if at all. Which is weird.
My M2 testing with MHD we found the E20 was the best we could get without the HPFP suffering. Although this is with the tune to match.
When I run stage2+ 102 Map I use 98 with 4 litres (1 gallon) and it's perfect