Howdy, kicking through a post on here trying to learn about my truck and the direction I want to go with it.

(2017 3500 4x4 73000 miles), so am I understanding it right that with the miles on my new to me a truck that on running a programmer it's all or nothing?

Not sure if I'm understanding that right that its best to not tune with my miles or if I do tune to go with the whole monty...

Thanks for your help.