Re: what did you do to your motor bike today?
Stuffed some coarse steel wool up the arse-end of my new exhaust setup this evening. Quietened it down to an acceptable level without affecting the performance increase! I did have to drill a couple holes through the muffler outlet so I could install a keeper wire. The wool wouldn't stay in without it. Guess that means the engine is breathing healthily.
You're never lost until you run outa gas.