I just returned from a 400 mile trip up to the high country and noticed that the factory torpedo muffler has become a baritone.
When cruising it is still pretty quite but when accelerating it definitely has a louder , fuller sound to it.
Tapping the outside doesn't seem to produce any rattles so I don't think anything inside broke loose and looking up the tailpipe doesn't show anything I wouldn't expect to see.
Most of this trip was run at speeds around 58 mph and the bike now has 2324 miles on the odometer.
Have any of you noticed a similar thing on your bike?