well i plan to get that pipe for it.and it leaves a white/blue tint behind me when i ride.and as for the plug i definatly do NOT putt around on it. the bike sees all 6 gears every few minutes i ride i never putt around loland i just bought the plug last night it shouldnt be foul already? and another thing the bike runs flawlessly when its on choke as soon as i take it off choke the idle drops and the bike dies.then it dosent start and makes a weird noise from the pipe like its spitting air? but as soon as the bike gets put on choke it fires right up and runs great. and thats just after i got done riding it today. and i already cleaned the carb i dont know what it could be?
Sound like it has something to do with the pilot jst. chack to make sure it is cleaned out all the way. Try setting your airscrew 1 1/2 turns out from full closed. the try adjusting your idle.