Re: 2013 overland computer tune
^^^ - I'm in the same boat. As far as I know to date - no one has a tune for the 13 hemi yet. Some do for the 12, but apparently the tune for 12 hemi's is not compatible with 13's, so there must be some differences for sure.
WK2 - 2013 G.C. Overland Summit, 4x4, 5.7 hemi
Seattle, WA area