hey busa bros & sisters newby here again,my busa is running real bad.the power com.went out replaced it and put the brock map back in bike is fouling out plugs sputtering and not staying cranked.the bike is customized stretched and chromed only has 4000 miles on it brock pipe and pair valve mod and small airbox mod.bike sounds like it is not firing on all cyl.but plugs foul out blacksoot on all 4 plugs any sugg.as to what i can check thanks