I had mine done last week (got the exhaust from moparsupercenter.com).

I guess I'm a bit more picky about the sound. I have had cat-backs before and I am pretty used to the drone sound that comes from a car in the lower rpms.

What I don't like about the borla catback is the two muffler setup. When I step on it, the sound is no different than stock. However, between 2k-3krpms I hear (and somewhat feel, although extremely minor) a loud drone sound which seems to come from first muffler (one closest to the driver seat).

This is the first time I have ever had a exhaust set-up like the borla. I know there are no leaks, I guess it's just character of the exhaust.