So I just returned from my test drive with my new Borla exhaust and I am very pleased. The ATAK muffler is the most aggressive sounding exhaust they have and it was worth every penny. This exhaust has a nice deep rumble, during cruising speeds and in V4 mode the radio volume has to be turned down to actually hear the exhaust in the cab (no drone at all). Now when you get your foot in her it becomes a whole different animal, it basically screams get out of my way. All in all I'm extremely happy with the system, from fit and finish to sound it is just what I needed on my truck to make it sound like a truck. If we have decent weather this weekend I might try to use my Go Pro and get some driving video for everyone.