When i open up the the throttle, it will cut out like fuel cut. this happened when i had low fuel. but after i filled up, still cuts off but not as often. it seems to cut off at about 8000 rpm. i don´t know for sure if ignition is cutting off or fuel starvation. the bike starts and idles fine. let me know if you have any ideas. i have 89 gsxr 1100.