Yo, I’ve been down this road! I’ve got a ‘16 EcoDiesel, and I felt the same struggle with towing, especially on those long uphill stretches. A couple of buddies mentioned doing a DPF delete, so I decided to give it a shot myself. Let me tell you, the difference is night and day. The truck feels so much more responsive, and pulling weight isn’t nearly as stressful on the engine. If you're serious about it, check out this option I found:
ram 1500 ecodiesel dpf delete pipe . It’s been super reliable for me. Worth considering!