e85 FAQ?

[jrohner]

And for tuning pretty much ignore your knock sensor because you can usually add way too much timing before seeing knock. Knock just isn't very useful for tuning E85 unlike pump gas; yes you still log it just in case of an issue. You need to either dyno or log and estimate hp (road dyno) to get your timing just right.

To get the fueling right, I just divide the injector comp by 1.4 to change it to E85 and it works out pretty well.