Hi all, I just bought my son a 2002 Banshee. The engine makes no funny noises or doesn't smoke, starts on first or second kick every time. The problem he is having is when he gives it more than half throtel the engine starts to back fire and it misses real bad. the carbs still have the TORS on them,I ordered the kit take them off today. If any one has any ideas I'll suer listen to them. The engine has never been in to pro citcut exhaust is the only non stock add ons. We changed spark plugs clean air filter befors he went to ride yesterday with no results. Any ideas?