So an update on mine - hope mbarber, olejoe, etc see this.
Picked mine up today after over 70 days at the dealer. 480 miles put on it since dropped off. 28,080 miles on pick up
The bad - despite nearly 10% fuel dilution they were adamant that it was due to the extremely excessive regens. All they did was a basic pressure test using the computer. No dye, ohm, or sending injectors off for proper testing.
The interesting - he showed me my old dpf and a new one. The old dpf was at least 4" but probably 6" shorter front to back compared to the new one. The new is also completely bolted in with flanges for easy removal and cleaning. Old one was welded - he hadn't had the old one from my truck sent in for testing yet but the exhaust was largely one solid piece. Ram was requesting mine be returned to them for some reason. He said for the 22s that for some reason, likely parts shortages, ram knowingly used inferior parts. In this case DPFs that are not capable of dealing with the soot of the 6.7. This problem is further exacerbated by the German MAFs. He advised the the MAFs screwing up, paired with an undersized DPF - that once the MAF starts sending the wrong readings the undersized DPF cannot catch up even with "normal" regens. They are set up to fail essentially (my words) but greed to push trucks out the door meant they rolled the dice figuring they'd make more profit then any losses by the time most people's emissions warranty ran out. In Oklahoma emissions are 3 years 36k miles. Mine failed in under 28k miles.
Lastly, he point blank said that the new MAF and DPF and most recent flash should solve my issues... we shall see as I plan to do an oil change between 2-3k miles since my 9.3% fuel dilution was at 2700 miles on the oil. Then I will do another OA on that change.
With all that said I'm not happy about the lack of fuel leak testing, but I drove it 375 miles to my old hometown in Kansas for the weekend and will drive home Monday. 375 miles, and the DPF gauge didn't move off 0. Average speed was 72 mph with less then 10 minutes (I clocked) idle time for the drive. I got 19.8mpg hand calculated. Fill before I left and again upon arrival. My hopes are essentially nothing, but maybe some headway has been made. I told them my plans for the next oil change and OA, and that if dilution is high a very unhappy person will be returning with fleetguard OA in hand AGAIN...regardless of if I have a CEL or not