Just finished up the fass II install, I'm a little concerned about how high the pressures are. 21psi at idle 20 cruising, and 18.5 under full load. I'm not sure if I should leave it alone, or try a different bypass spring. I am using the Fass kit , but after the pump the lines are 1/2" with no banjos all the way to the VP, I'm wondering if that is contributing to the high presuure.
The pump looks like it fits the Cummins better than the wimpy Carter pumps. Overkill, just the way I like it.
Matt
The pump looks like it fits the Cummins better than the wimpy Carter pumps. Overkill, just the way I like it.
Matt