Hello! I'm new to this world of motor bikes. These motorized bikes seem AWESOME. I have done lots of research and reading about motorized bikes. I am going to get a 4 stroke engine kit soon. (from five flags) My question is about the short stock muffler that is included in all kits. Does the smell of the exhaust ever bother you? I'm guessing that when cruising around, the wind should just blow the exhaust behind you, but when you stop, does the smell of the exhaust really bother you? I'm thinking of getting a long muffler so that all the exhaust stays at the back of the bike. Also, can anyone tell me or give me a link on how to clean a muffler? or are the short stock mufflers one-piece and not "cleanable"? Do the mufflers even need cleaning??(the insides of the muffler where all the carbon is deposited) Would the process of cleaning any muffler (such as a car's muffler) be the same as cleaning the mufflers of these motorized bikes? if so, I think i can just google how to clean a car's muffler.