this was driving me crazy. my bike was back firing today while i was accelerating going downhill and when i would reach the end of my powerband of the flats. i had to go to about 1/2 throttle to make it stop. i pretty sure it was coming from the pipe and not the carb. any ideas?
heres my set-up:
50cc kstar w/hi-comp head
16 del (jetted to rich right now)
low end sucks right now