Ram CP3 swap
This article will mainly interest RAM 6.6 owners but it does mention the CP4 bypass for Ford 6.7 owners at the end. It is about swapping the CP4 for a CP3 as a precautionary measure
Forum Discussion
Perrysburg Dodgeboy wrote:
As for the CP4.2 pump it is as sold as the CP3 pump of yesteryear! But some of you and keep believing what you want.
Plenty of CP4.2 failures on 2015+ LMLs that have them. I've seen several reports at DuramaxForum and know someone who lost a pump and all injectors personally.
At some point I swapped mine for a CP3.
