Couldn't tell you, haven't driven it besides up and down the driveay while moving it around. If it wasn't for CPP's lazy ass shipping methods I would have it on the road this weekend.
At idle it's very deep in the cab, but when holding the revs at about cruising speed it's got a nice throaty tone with out droning like flow masters. It has a mean bark when you wail on the throttle.
Trust me, I can't wait to get on an open road and let that 4bbl go wide open