49cc 7g ghost racer engine kit boggs or wants to stall

CharlieHustle

New Member
Jan 23, 2013
13
0
1
Cleveland Hts Ohio
i recently built a 4 stroke ghost racer kit i put a speed carb on it first and she was fine until i changed the exhaust. i used the exhaust off a 2 stroke what can i do to fix this besides going back to stock exhaust.