There will be no DPF! cut off that muffler and either straight pipe it, or put a performance muffler on, or 5" turbo back system.

 

No just a cat and muffler. It is a factory 4" exhaust great flow for most setups if straight piped or high performance muffler. DPF is only on 2007.5+ 6.7L trucks.

 

As was said ^^^ just the CAT. I got a ME pipe, left the CAT - no real backup pressure to the CAT, and a BIG fine from the EPA if you get cuaght without it. I got my 2006 when I did because of the DPF threat for the 2007's and the end of the 5.9's.



CD

 

What they said....your friend is good to go!!!!!

 

Ok good we are going with a MBRP 5" Turbo back straight pipe AFE intake and Predator tuner! He thinks the truck is powerful now :rof Wait till I get this stuff on it. Not really keen on the Dodges since here where I am "North AL" everyone has Duramax's. But I will have a Cummins for my next truck. How much louder will the truck be with 5" straight pipe? I have only heard one other cummins with large exhaust and it had a 6" I think Bully Dog possibly and it was outrageous! Thanks for the help guys!

 

Well, I have a Magnaflow 5" turbo back and it is loud. Sounds awesome when I kick er down but when towing there is some drone.......if you know what I mean by that. Hard to explain....ha ha. Take it from me......without engine mods (other than an intake), the 4" will do you great plus it is a lot cheaper. Good luck