i just bought my blaster and the guy said that it had the 240 bb kit and the carb was rebuilt and jetted i rode it the night after i bought and it seemed like when i was goin up hills it was a slug unless i really nailed it and with the rain box over the filter it really slugged going anywhere. a friend told me that if it has motor work done to it and just the stock pipe and silencer that could be why its like that, so im thinking that if i get just the fmf silencer and re jet the carb id be freeing up my engine right? it also has the br8es plug in it i dont know if that is the stock plug or not if it makes any difference