So, I've gotta a 2012 3500 w/130K on it. Wanted to keep it bone stock through warranty period. Just now showing codes that indicate EGR valve/cooler problems. Cleaned the valve and was honestly shocked at all the crud that was going back into my engine! I need to get an education regarding deletes. I'm a damn poor mechanic. Damn poor period! What can I expect from just an EGR delete and how involved is that? Thanks all!