right now i runs my bikes on non-e and castor 927. one of my bikes is stock with t5 pipes and silencers with jetting. my other bike has the same pipes with cool heads (dont know the domes, but i have 121 psi) and +4 timing. I have been told that a stock bike can run just fine on race or airplane fuel? should my bike with modes be running better fuel? what are your opinions and what do you guys/gals run?