I'm to my wits end on this issue and need some help figuring out where to start. For back story, its an 07 GT500 with some upgrades and mods. Recently, the fuel pump started to wack out on me and stop priming when I cycled the key. Eventually after enough cycles the pump primed and I was able to drive it a bit. Then after a few drives it stopped priming again. It seems to intermittently want to prime and not prime when I go to start the car. The car still cranks but the fuel pump doesn't...

Fuel pump no prime