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      07-13-2012, 10:53 PM   #56
Drives: '08 E90 335i
Join Date: Jan 2012
Location: Northern NJ

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2008 BMW 335i  [3.75]
Originally Posted by dfv2 View Post
well, yes you will if the e85 allows for more advance than whatever gas you're using, especially for ACN 91 users. And mixing higher than X octane has nothing to do with anything, it's fuel volume limits that are an issue.
Well your timing will be a lot better, but it's not like your car will go from the stock 300/300 tune to 320/330
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