So I recently got a new scooter and I went to a performance shop and the guy was really pushing a new muffler on me. My mechanic went with me and he says that they do work= increased performance. I have read on Forumosa by others that all they really do is make your scooter louder not faster. I have also read that improved exhaust flow will improve the perfomance of your scooter. Hypothetically speaking if one were to install an after market muffler would they be able to get improived performance from their scooter. I see a lot of scooters around with these types of mufflers and some are louder than others there are basically the silver and the black ones. The silver ones being the louder of the two. I am interested in boosting the perfomance of my scooter as legally as possible. But at the same time I don’t want it to sound like a Harley Davidson. I don’t mind a loud scooter just not one that’s too loud. Any recommendations.