I posted a good bit of info on the other forum but for those that don't use it I'll give a short review.
Install was easy. I was planning on doing a photo write up but when I dug in I realized it wasn't even worth the effort.
In normal day-to-day driving there is no change. I didn't tell my wife about the JB4 (she though I was just under the hood installing the small Stinger badge). After I came in the house she went out and ran some errands. When she came back I asked if she noticed any change and she said no.
In more spirited driving the car accelerates quicker...really it's that simple.
I did a few 0-60 runs yesterday with the tune installed and today with it uninstalled. Both days the temps were the same, I used the same exact area of the same road. Today, with the tune uninstalled I had slightly less fuel. I used video editing software to see exactly what the times were. Yesterday with the tune installed my fastest time was 4.26-4.29 to 60. Today with it uninstalled my fastest time was 4.53.
The tune with the default map is good for shaving a quarter second off your 0-60. No idea how much better it would be with different maps and I don't have access to a track or dyno.