1st step would be removing the limiter and a tune to get you past 145... perhaps you means quick vs fast. the rocket is terrifying past 140 compared to any other sports bike. last time i did over 160 was on my friends BMW s1000 RR... 140 on the rocket feels like a train that came off the rails... vs a smooth ride on anything else meant to go fast. The front end of the rocket is NOT good at those speeds. not without modification.