sorry, can't answer your db question, but just wanted to say, dayamm the 2-1-2 termis without baffles are loud! louder than my 2-1-1s.. my ears are still ringing after riding home from work..
and to me it's not a pleasant sound either-- the high-end noise sounds awful and tinny, and the low end is just too loud.
that said, i wouldn't mind my 2-1-1s a bit louder.
dropped my hm-s in for 12k service this morning. got a hm loan bike with only 1k on the clock.. engine feels so taut, std seat feels so hard, suspension feels so loose.
also, dunno if it's due to run-in, but power ramps up really sluggishly, and compared to mine feels significantly less..
the base model brakes don't too bad, feel about the same as my s-monoblocs on current mileage.