I was wondering about this - putting it in “Sport” or “Trailer” should disable the DFM?
Also my truck is new 2024 and I haven’t been able to detect any noises or shudder when the DFM activates. My boat with a 4-stroke Yamaha had a problem with the injectors and 2 of the 6 cylinders would “deactivate” intermittently and I could definitely hear it and feel the engine shudder until all cylinders kicked in.
There’s no user configuration which will disable DFM in these trucks ie sport, trailer, L9.
Apples and oranges between a Yammy v6 and these v8’s both in the method used to drop cylinders and primary / secondary balance effects.
Little evidence to show this is a modification to improve reliability of the system but it sure feels good to partially disable it.