my 2006 banshee won't idle when its cold more then 3 seconds but when its warm it idles just fine it also sounds weird at the beginning of a rev when cold like its falling on its face and some times it dies when i do that the only mods on the bike is t-5 pipes and silencers, v-force3 reeds k&n filters with no air box at all and I'm not sure about what is all done to the carbs besides tors removed