my lift pump packed it in today got towed home showes a low voltage code at lift pump.Truck would lag like it was running out of fuel so i changed the fuel filter then it started to stall .Dealer sells an intank upgrade only they no longer have external pump available.I am thinking of installing aftermarket fuel pump inline seems to be a better way to go what do you guys think.What volume and presure do i need.03 5.9 cummins HO stock with upgrades to come.Also will fuel be restricted at old lift pump at fuel filter?
