I dont know if it was a backfire. I was driving into work this morning and was passing sombody let off throttle and KABOOM!!!!! sounded like a grenade went off under truck no cel truck seems to be running fine I have almost 8000miles on it never any trouble anbody have any ideas. thought I blew the dpf right out the back of the truck guess that is one way to get rid of it ????????????????????????????. 

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