I have a 2013 Dodge Charger Rt with the Nag1 transmission. I am trying to figure out why I can't write a tune to the TCM. I swapped out TCM's and I ran the resync and tried to write a new tune to the TCM. It acts like it sending and writing the file to the TCM. When I go back in the TCM still has the stock tune in it also have reset adaptives and still no luck.