I have tried high octane fuel. No difference, I definately don't want to tear a good running engine apart. To do Pistons and cams, also don't have the money. Of course fast is awesome, but come on guys. I can't see anyone riding their rockets to their limits. I've been riding for 40 years so I have a lot of experience And can't push this bike to its max sustained. I'm sure the oz claw will help, but its little too exspensive. Once again thanks everyone for their input. and HansO for taking the time to help. It's weird but out of all the motorcycles I've owned I love my Rocket Roadster!!