I have a 2010 rmz 450, with 35 hours on it. I run sunoco 110 leaded fuel. The other day I hit the track and bike was running fine, did almost 2 short laps and bike started popping and just stalled with in 3rd gear. Put it in neutral, kicked a couple times and it fired back up, it would pop and sputter once over a 1/4 throttle and then stall again. pushed back to the house and let it sit a little. Kicked over and started right up, but once warm again it started acting up again. Lastnight, I cleaned the sensor in the airbox, checked for lose or worn wires. all look ok. Started up, when the bike is still cool it revs out just fine, once warm it starts acting up again. I pulled the Powercommander off and dumped the fuel out, and will test with just 93 pump gas tonight. I don't have the power connector to start metering all my sensors yet, but will probably have to get one now. Any advice is greatly appreciated.