I was riding my bike tonight and it was running fine all day and night and when I got close to the house, my acceleration got really bad and my exhaust sounded like the engine was fluttering real bad. The bike starts up fine but when I turn the throttle it moves up like a 250cc not a 929.

Please let me know if you know what might be the problem

 

sounds like its not firing on all 4. check spark and fuel to each cylinder

 

about the plugs. Especially if your **** sounds horrible.

 

does it feel like a misfire? or just kind of bogging down? have any mods been done? have you had it apart recently? is it overheating?

 

Check your fuel pressure regulator.