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Active Fuel Management vs Dynamic Fuel Management

6.2K views 8 replies 6 participants last post by  ChevyZ712013  
The DFM design is intended to lessen the mechanical resonance that was prevalent in AFM engines which was known to cause shuddering. The main changes is in the software and the inclusion of the remaining 4 cylinders in the design. The internal engine components are the same, so they will likely have the similar issues.