Hi everyone, this is my first post. I'm not new to diesels but I am new to all this DPF bull$hi+. I had a 07 classic 4x4 CCDRW, and I had an unfortunate encounter with a train. My new truck is the same but the new body style. I have my 4" exhaust off of my 07. From what I've read I can run it on my new truck if I have the flashscan, is this correct? I'm sure this has been answered 1000 times on here, but 1 more probably won't hurt anyone.