2020 GM/Chevy gas 6.6L max towing test
VIDEO
Forum Discussion
The current CP4.2 is not the same as the old one that was notorious for failing on the 2011-2015 Ford and GM trucks. There is a different cam profile among other things and the max pressure was raised from 29k to 39k psi.
I believe the new Cummins is only pushing out 29k psi which plays a huge role in the pumps longevity and reliability since it is not utilizing the pump to its max capacity like Ford and GM were with the old CP4.2. The new 2020 PSD is utilizing 36k psi from the new CP4.2.
I believe the new Cummins is only pushing out 29k psi which plays a huge role in the pumps longevity and reliability since it is not utilizing the pump to its max capacity like Ford and GM were with the old CP4.2. The new 2020 PSD is utilizing 36k psi from the new CP4.2.
