Me_AgainExplorer IIIAug 03, 20202019+ RAM HD with failed CP4-2 IP to get CP3'sRAM mechanic just posted on another forum that RAM just release a new plan to replace all failed CP4-2 IP with the more reliable CP3 IP. Hopefully they with recall all the others for a replacement...Show More
stsmarkExplorerAug 07, 2020I’ve always thought a part of the change for Ram/Cummins is that the CP 4 requires less HP to drive at the higher pressures.