These are some videos I took from ZDayZ that I figured I'd share with you guys. They showcase the FI exhaust pretty well. If you didn't read it already, I have the 18" resonated CBE with STOCK cats.
These first two videos are mounted to my rear bumper and have been uploaded in HD.
These two are mounted to the nose of a NISMO 370Z (all stock) following my car back up the Dragon. FWIW, I am in 2nd and 3rd gear for most of the time and I never really wind the RPMs out as we were being very civil. It's a public road with lots of traffic so we're not going to attack it like a race track.
*Updated* Chase videos now HD.
Keep in mind that the GoPro sound quality is not the best, but this will give you an idea of what to expect. As you can tell from the second pair of videos, you really don't need to worry about the 18" resonators being too quiet.