I was looking at options for wiring my new 340lph in tank Aeromotive pump. I’m wondering if it’s really necessary though. I’m going to finish wiring the pump up and mounting it today but the wires coming out of the pump are 14ga maybe 16 and are terminated internally so no upgrading to the pump. But 14ga wire @ ambient temp at 12-14vdc is capable of handling around 15 amps constant up to 50ft. The factory wiring is about 12-14ga from what I can tell and doesn’t run a total of 50ft. As soon as I get this wired I really want to measure current draw but is there anyone else that did the math and or measurements on pump draw and if upgrading the wiring and relaying worth it? I’ll do the math and measurements once it’s installed but I would like to compare someone else’s findings to my own.
Regardless of the math, I know that tuning an engine with stock wiring and a 255 or larger pump that's being pushed pretty hard, then upgrading the wiring makes you have to re-tune because the fuel flow changes so much (it's pig rich after the wiring change).
I was hoping that I wouldn't have to run it all the way to the pump because I have already installed the 255 in my mustang. I wonder why that short section from the connector to the pump doesn't cause any issues? Does that short of a section just not allow for enough voltage drop to be an issue?