Okay guys I'm new to the diesel world this is my first diesel I've ever owned it is a 2008 Dodge Ram 2500 6.7 l 136000 miles I recently purchased it from a dealership in Atlanta I was told it has DPF delete EGR Delete and has been tuned it has tons of power and blows out a lot of smoke when giving gas but when I bought it no tuner was given to me so far the only problem I'm having is it keeps giving me a see dealer now service required code on the overhead display is there any advice or help anybody can give me on this problem thanks

 

The truck did not have that before hooking up new tuner?

If so unhook tuner and see if message goes away. You need to set tuner to delete DPF codes, my guess is that's your notification