[Kazee]

Well...after driving to work this morning, (5:30 am), came to the conclusion that this is just too loud for the street, even for me, (how about an ear bleeding raspy staccato at full revs), soooo...I put the cat back on and while the rumble at idle is still there, (though reading about 4 dB less at 10 feet than without the cat)...the sharp bark is gone replaced by a deep growl as the revs climb. This I believe is what was intended by Bisimoto in the first place and it's rather intoxicating.
Just to add, our bedroom is above the garage, wife informed me that the bed started shaking when I started it up.