i have fmf fattys with power core silencers, cool head with 18cc domes wiseco m series racing pistons boost bottle, the carbs are stock.
it ran fine before i put the new pistons in
not sure what size the jets are, or even how to tell i ahve 2 sets one for winter and one for summer
do you think i need to go bigger with the jets or what
as for running when i start it it idles really really high sounds like its going to explode then it backfires and shoots flames.