I believe Wayne had posted something similar. But alas, on my commute this morning, I lost a bolt / plug on my exhaust.
I generally wear plugs. Any how, along my commute way, my exhaust was sounding a bit different, and could have sworn I heard some popping as I rolled of the throttle too. As soon as I rolled into a parking space at work, I left the motor running, pulled off the helmet, then removed my ear plugs, sure enough! there's an exhaust leak. Fortunately, it is / was a simple fix, w/ an M6 SS screw.
By chance, would anyone happen to know the intent of this plugged threaded hole?