First, the reason that I was questioning this is the idea that higher octane fuel gives an engine more power. Not true. That would require a higher energy content and that isn't the case. Higher octane means more knock resistance, not more energy.
More octane does mean more power. It's an easy test. Compare a tank of 93 to a tank of 110. The results are very obvious. It doesn't take a rocket scientist to feel the difference. Also, what he was looking for was knock resistance so my recommendation for higher octane falls right in line.
You insinuate that you can tune Doug's 10-1 engine to run on 93?
