Hmmmm.... Just got my 2014 6.2 a couple days ago. I was thinking of just straight piping the muffler; maybe a dual tip and leave the rest, but was concerned about drone. If this isn't an issue, I think I might be in...

 

On my 5.3 with the stock system minus muffler ( 3 cats, 1 resonator ) the part throttle "drone" wasn't to bad, V4 mode was kinda annoying especially if you came up to a small rise and it loaded up a little.

 

I deleted my muffler and left everything else stock. A few days later and bolted the little drone valve open. There is no noise or drone inside the cab. Even the wife likes it.

 

I thought the valve was in the stock muffler? Can you elaborate where/what it is

 

The valve was on the muffler on my truck and went with it when I ha the muffler cut out. It droned like hell that way. If you liked it, good for you that's great, just sharing what I experienced and how I felt about it.

I spent the money for a nice cat back because it sounded like crap with the setup I had.

 

The valve is right past the muffler. There is enough room to cut the muffler off and leave the valve if you want to. It's just my preference that I did. I noticed no difference in bolted open or left stock.

 

Gawd damn that looked and sound sweet.....