I have a 2010 YZ450 that has a nasty bog when getting on the throttle hard. The bike has 85 hours on it and the bog didnt start happening until about two weeks ago. I ride mostly on a motocross track. The bog happens right when I need the power the most, on the face of a jump. It feels like I am pressing the kill button. The bike has never died, just loses all rpms. The bike had 4 historic codes on it; atmospheric pressure sensor, throttle posistion sensor, intake air pressure sensor, and coolant temp sensor. I have replaced the stator/pick up coil and the kill button, neither of which have helped my issue. I have checked valves, all sensors, and wiring per the service manual and have not found any problem. Does anyone have any idea whats wrong with my bike? I feel like it is an electrical issue and not mechanical, as the bike always starts right up and runs great until the bike is hot. I am yet to determine if I am losing spark or fuel when the bog happens.