It’s interesting that there has been such diverse results reported by owners post AEM update. I question if these vehicles are actually responding differently or is it simply a difference of individual’s perception.
In my short lived personal analysis, I found acceleration from a rolling stop to be painful when cold and still very objectionable at operating temps. Throttle response degradation was noticeably poor in various situations. I didn’t drive it enough to come to a resolution concerning fuel consumption but I would expect it to probably be less efficient at least under some driving conditions.
Now, I’ve seen several reports that owners have noticed no difference in performance after the AEM update. This leads me to query once again, are your vehicles responding differently to the software update or is it a difference in perception to what’s really happening? It would be very interesting to see some before and after dyno comparisons. Probably a multitude were done during litigation but doubt that will ever be made public.
My experience with the new performance of my vehicle was totally unacceptable for everyday use. Very objectionable.
Now, regarding the OP’s thoughts of additional law suits, I honestly wouldn’t be surprised to see additional class actions regarding the drivability issues. Under normal circumstances, there’s no doubt in my mind mama FCA would be doing some follow up software updates to further refine this situation. Unfortunately, the results we’re living with is under the auspices of multiple federal entities and duly approved by the court. Further unilateral amendments on the part of FCA would be impossible without additional litigation.
I think there will be some interesting developments on the horizon but, alas, I no longer have a dog in this hunt as of 6/4.
Good luck fellows