I've had mine now for about 5 days. It's quieter than my Charger R/T with the 5.7 Hemi. That one has a factory active exhaust and CAI. But I do like the low rumble at idle, and just enough growl during acceleration. Once the tranny hits 7th or 8th gear though, I generally don't hear anything inside the cabin. It's certainly not loud. Now I've heard some say that it's going to get louder as I put more miles on so we'll see if when I get to 3k miles, if i notice it more cruising inside the cab. Also, oddly enough, I've seen the truck go into eco and have not noticed a change at all with the exhaust note. I guess that's a good thing.........
Mine has actually gotten quieter and deeper as it’s broken in