r/atvshee,
What size carbs and what pipes are you running? I have a similiar set-up that I have been trying to get dialed in.
421 Cheetah powervalve, 34 Keihens, CPI`s, +7 timing, 14/41 gearing, I had 165 mains in when I got it, just went to 160 mains which improved it. I did not want to go too lean?? I guess I will try smaller mains. It pulls hard to 3/4 throttle and flattens out? It seems like once you hit full throttle you got to let off to 3/4 to keep RPM`S up strong?
Thanks,
Docbones