You guys should read this:
http://www.atvdra.com/forums/index.php?sho...&st=0entry200
I'm telling you now, I don't care what you say, there is no way (scientifically or mechanically) that a stock motor will benefit from high octane race fuel. The guys that claim they felt an increase from using race gas have been influenced by a "Placebo Effect". You are running race gas therefore your mind is telling you "Hey, the bike seems faster". I'll put money on it that its not faster. If anyone cares to dyno a stock banshee with pump gas and race gas, I'll put up $100 that says there is zero power increase and possibly even a power loss. If I'm right, you pay me $100, if I'm wrong you get the $100 + dyno fees. All info must be posted (ie; dyno graphs, type of gas used, engine modifications, etc). No other changes to the bike are to be made except the fuel. Any takers????