Does anyone think that fuel mileage should be better with a stock muffler over an aftermarket? I'm curious about some others experiences with this, I didn't monitor my fuel mileage that well the first 600 or so miles and then switched to the Micron. I did get 35 mpg's once during break-in on the stock muffler and have been getting 30 mpg with the Micron. Every bike's exhaust that I have modded has affected the fuel mileage but that usually involves a fuel management system like the PCIII and a high flow air cleaner. With the Spyder obviously it's just the muffler so should that make a difference?