Originally Posted by dmaxstore
The OE Duramax fuel system does not have a lift pump, just the injection pump. This is a poor design and we will be adding an Airdog fuel system. We run these on all of our trucks and highly recommend them.
Just curious why the factory CP3 injection pump is a poor design? It seems to work great and the factory dmaxes produce great power. However, I can definitely see the advantages to an aftermarket lift pump like the Airdog.