2012 V-6 GMPP mufflers
 

Here is my youtube page with some muffler videos to share. I can say at idle and up to about 3K no real difference, slightly deeper tone not much on loudness. Car has no drone noise when driving at highway speeds 55- up.:happyanim:
You can "hear" some tone in the car on merging/WOT but at a moderate level. If you are looking for a loud this is NOT your system.

http://www.youtube.com/user/etmx193?...e=results_main

Sounds goood nice

Great, just what I've been looking for, thank you very much!