Originally Posted by Glowgeek

Thanks Pete, yes I get that but nitro advances the ignition timing and you can only induce so much fuel charge into the combustion chamber with any given engine setup. Higher compression also advances the ignition timing and although it also contributes to higher volumetric efficiency at some point the introduction of higher nitro will bring on detonation.
A fella can keep raising the nitro content in his fuel until no further peak rpm is seen and then back off a percent or two for safety but yes, it will drain the tank and the bank.

What my little project is all about is to raise engine hp through volumetric efficiency and hopefully realize some long term cost savings with little initial investment. Besides, I enjoy engine modding as much as flying. I also like slighting the EPA whenever possible but that's another topic, one that I believe nitro users will be discussing more and more in the not so distant future here in the US.