Let us know how it goes .... got a pale of M1 and M5 just waiting until I get one of my race bikes together. Local Turbo Honda folks says the fueling is the same, timing a degree or two less. They claim they don't see an increase at peak HP, just a beefier TQ curve. I've personally tested nitropropane with ethanol (nitropropane is what is really in M5) and seen a 2% increase in the HP curve. So, I don't know where they are getting that ....