I want to install a better lift pump than the OEM Carter. I like the Airtex. Any reason why I couldn't use it with the Straw V to improve my suction? Also, how can I eliminate the banjo fittings to improve my flow?


I see no reason to install a draw straw or larger fuel lines unless you have a need for that much fuel flow. I'm running a Walbro 392 lift pump like this one:
Glacier Diesel Power - Product Detail
I'm also running high flow banjo bolts:
Banjo Bolts Cummins City Diesel - Diesel Performance
My fuel pressure runs steady at 18 psi and doesn't fluctuate more than 1psi (measured AT VP44 inlet) regardless of throttle position and tuner setting. If I had it to do again, I would use the FASS DDRP with the high flow banjo bolts. However, I have been very happy with my current system.