ok so i didnt have an airfilter in my bike or all the screws holding down the bike so for now i put all the screws back in cranked up the bike the idle jumps!!! like crazy!!! it will idle at 1500 then all the sudden jump to 4000 then go back also when i give it gas it revs up fine but when i ride it it boggs out at full throttle please help!!!!

 

Vac leak...you can run the bike without the airbox, that's not the culprit. Check all the hoses and make sure they're connected to something. Take off the tank and start looking around there.

 

NO AIR BOX? that well could be your problem, it is running way rich or lean.