I just got into this group, but I have a few questions about tuning!

As I’ve mentioned, I have 2017 6.7 Cummins 4x4 2500 3.42 rear end (I believe).

I just ordered an mm3 tuner with GDP tuning.

Has anyone ever had their tuning before and had any issues?

I’ve never run them before, so I’m kind of nervous.

I’ve always run Firepunk before.

Thank you for the help!

I will post pics of the truck soon!


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