Originally Posted by TT RDHS
Without the "db killer" installed, it is VERY loud at high revs.
It sounds absolutely glorious.
With the db killer in, it's quiet and has an intermittent high pitched "chirp", that I found annoying...
I shortened the db killer about 1,1/2" - 2", and cut out the little bar that goes across the inside of the insert.
Now it sounds nice. Maybe a bit louder than is "politically correct", but not loud enough to piss off my neighbors.
Got the same exhaust and have been thinking about doing what you did. What do you think was causing that "chirp"?