Well, heat is power, any heat kept in the chamber is a plus, alum heads suck the heat out of the chamber, not ideal, and why additional CR is capable usually with alum vs steel heads, I am not sure how much coatings reverse that. I plan on coated pistons with the chambers in my builds. I would think with E-85 it would be even more beneficial, but have nothing to back up that thought.

Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.