So the SCT X4 I have will still read codes and gauges etc. Guess I just cannot tune the truck with it. Granted, DoD isnt tuned out I just use a Range so not sure if that will have any affect on heat when in 4cy mode. I would assume it would since its only working half as much. However, when riding around today, It did not hit over 187 even idling. The analog gauge at the time was almost at 210 then. So I assume it probably wouldn't go over 190 running around. This was with it being 91 outside. I guess Id call that a win. LOL.
On a further note, for what I did today, she got a bath and the inside cleaned as well. Also took the cheap tailgate cap off and put OEM on it. Serves me right to buy that off Amazon. Sat too tall compared to the sides.