Are you sure you guys taking full advantage of e85?

From my experience with Cobalts and other cars. E85 > Meth. Even the local Evos say they prefet it.

 

That car is running a little rich for E85. I would have tuned it to around 12.0 -12.2 AFR.

In my experience I choose E85 over meth. When I tried meth I blew my engine! Been on E85 for months now and the engine is running great. I do miss the cooler intake charge temps but I would take the hotter temps over another chance of blowning motor anyday.

 

Since e85 burns cooler. Its a mute point.

I tend to run my tune rich on e85. Alcohol based fuels love to be rich.

 

Target AFR for my 530awhp pull in my evo was 11.5:1 uncorrected.

Its a road race car so it needs to be a lil more conservative than what your average quarter mile/40 pull/ daily driver needs.