Ok so ive been reading and reading and reading these threads on here trying to figure out why my raptor is cutting out at half throttle, i did the pb sensor, and reverse wire, cleaned the carb numerous times, cleaned the petcock and gastank, readjusted the valves, check the spark plug, regapped it, not a change after all of it, once i baby it past half i can go full throttle, i even put the jetting back to stock. if anybody has any ideas let me know i have an 03 Raptor 660 with hmf pipe and took the snorkel off the air box for a little better air induction