I'm new here but not new to Cummins. Im currently in my 4th cummins and it's a 2011 2500 4x4 long box. With the previous three, I was either in college or regrouping from divorce and really didn't have the money to do any upgrades. Now that I do, I'm interested in knowing what you guys recommend as your first step upgrades. I put a leveling kit and a set of 35" toyos index a few weeks ago, now I'm thinking about a programmer and a egr and dpf delete. Any thoughts would be appreciated. Thanks in advance!