Upgrading to a 1st gen cummins hvlp lift pump
If you're tired of watching your fuel pressure gauge dip every time you step on the gas, installing a 1st gen cummins hvlp lift pump is easily one of the smartest upgrades you can make for your old 12-valve. It's one of those "set it and forget it" modifications that actually makes a tangible difference in how the truck runs, especially if you've started tweaking the pump for more power. ...