I sure hope someone can point me in the right direction. I have shotgunned twice, broke down carb completly and did through cleaning on all jets and jet block, 1/4 can seafoam and new fuel filter and still getting the same outcome. The bike sputters at low speed, some backfiring, very low idle like only 2-3 cylinders firing. When I cruise at 70-80mph it runs and sounds fine but when I let up off the gas it acts up. I run my vboost open and have cops on it. I am going crazy and would appreciate any help. Thanks guys in advance, SLee