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I just recently learned that engines with Dynamic Fuel Management (2019+ L84/87) have 16 AFM lifters instead of 8. This is another reason why the L84 and L87 are having higher failure rates vs the L83/86. DFM can deactivate any combination of cylinders it wants at any given time vs AFM just deactivates the same 2 cylinders on each bank.
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2016 NFG SS A8/Whipple 2.9/Fuel System/Flex Fuel |