Quote Originally Posted by 16 Cummins View Post
You actually don't have a muffler on your 2017. It has a DPF and scr. The race pipe removes both and you have an option of straight pipe or add a muffler.
I put a muffler on mine. It isn't much louder, but it breathes better. You can hear exhaust brake from outside now.
My bad... I have a 2012.

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