Before the mod, the coldest ever temperature I recorded was 52 degrees out of my driver's side vent. This was after the truck was on and running for 45 minutes, the temp outside for this test was 91 degrees.
After the mod, I achieve temps in the 40s as the picture shows within 5 minutes of starting my truck. Today for instance. Outside temp was 96. Temp coming from the drivers vent was 44 degrees. The mod helps a significant increase in AC performance and confirms there is a bleed door or valve issue with trucks mostly built before September 2018. If you notice none of the people complaining have build dates after 9/18 they are all before.
If we can find out what RAM did in 09/18 to handle this with the newer built trucks. We would have our answer and a fix would be in order.