i have a 93 gsxr 1100 it is poping out the exhaust iv tried to narow down to when it happens but i cant it happens when ever it wants too. what happens is the engine will start to flutter the tach starts to jump around the engine will then shut off it happens when i hit bumps but not all the time under acceleration but not all the time you get my point if cleaned all of my electrical connections and yes i do have fuel in it if actually drained the fuel thinking water was in it i put fresh fuel in no diffrence. a taped on the cdi box to see if vibrations would change anything but that didnt do anything either. can anyone help me im stuck and im affraid that the dealer is gona charge out the butt.