Mine was measured at 122dB @ 3/4 rpm, including a dB-killer that took 10dB out .
The guy measuring it said he wasn't surprised, as most Yoshi's he had measured was significantly louder than, say, Akrapovic's.
Like I said, I replaced it with stock and haven't looked back.
Oh my god, really! That must have sounded amazing!
Bullet
Hmmm maybe the bike hire will be the only option then....