Very cool info. 65% sounds low, and clearly there will be some room to squeeze out more power, but I'm sure every street engine is tuned down from max power for reliability reasons.
I'm interested in what tuning to "100%" capacity would look like in an engine. Is it the state of tune like what you have on a top fuel dragster, where it's max power or flame out every time you launch? For a daily driver, given the sometimes lax maintenance of the average owner (not to cast aspersions on any of the fine enthusiasts here, but referring to the public in general) it would be a bad idea to warranty an engine that was tuned within an inch of its life.