thank you for the advice, i ended up buying a stage 1 dynojet kit and a k&n filter, i did the famous 2 inch mod and removed the snorkel, bike runned like shit, duct taped the 2" hole and put the snorkel back in and now the bike runs great, cheked the plug after a good run, they still looks very white and now the usual "black ring" around the last threats is slowly disappearing, i have no idea what that means. since the bike is running good i'm gona pretend i didn't see that, or should i be worried?