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Originally Posted by -Rizzo-
but overall no engine mods? i know with the cobalt u had to replace the cams. i know its a cobalt but im just saying. i am thinking about this because in my town we have e85. does MPG take a huge hit?
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You do not need to replace anything when running e85 with JB4. (Assuming you have DCI and DPs)
If you run map 5 on jb4 it will auto tune to e85 mix. You just can't run any higher mix than 60/40.
And yes, your mpg definitely decreases with e85 but I think it's definitely worth it for extra power temporarily.