hey guys i live in the middle of noware lol Rapid City Sd, and i have a few probs.... first i need to know if anyone can tell me of an performance air filter for this bike and what parts i need to make it work. second any one have any ideas about exhaust cause im tired of the stock one dogging all of the power. i was just going to cut it off and have it an under carry pipe but that would be loud and not the sound i want.tires any broader ones i can put on it with out too much cost preferrably the same rim  and all. and any performance upgrades so i can have more power and speed im a big guy lol