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Dynamic Engine Control

Dynamic Engine Control

Postby larryz24 [OP] » Oct 16 2019, 2:49am

My 2019 1500 has the 5.3 L AFM engine in it. I saw a video that states the new 5.3 will shutdown 4, 5 or 6 cylinders while cruising. I was told at the dealership that it will only switch between 4 and 8 cylinders, who is correct? I don't see any online literature that clearly states what the engine does.
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Re: Dynamic Engine Control

Postby 19trax95 » Oct 16 2019, 2:52am

Which style truck do you have? Is it a 2019 LD, or the new style truck?

AFM is is either 4 or 8 cylinders, and that is what's on the LD trucks

DFM is the same principle but can shut down any of the 8 cylinders and has a much more diverse pattern with which it shuts them down. This is on the new body style trucks.
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Re: Dynamic Engine Control

Postby 06MonteSS » Oct 16 2019, 2:58am

And if it's the new body style truck, with the DFM, and/or the e-Assist, and/or the Auto Stop/Start crap on it... it can not be tuned at all...
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Re: Dynamic Engine Control

Postby larryz24 [OP] » Oct 16 2019, 3:13am

Yikes! Yep it's the new body style and it has DFM, not AFM.
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