What’s up guys new to the forums but have been on this site for a minute anyways haha need help 😅

before I ask some background on my G
2004 Infiniti coupe Auto (yuck auto I know)
swapped VQ same engine 2003-04
50k miles
FBO Cammed
Link ecu stand-alone

So today I took my car to get tuned after I installed a Link EcU stand-alone system worked fine on start up initially for about 20 seconds then stalled and died on us this was the first time in two month since it had started up after dying on us it began to make a ticking noise like the fuel pump was engaging or something and then it wouldn’t crank over. The ticking noise only occurred when we turned the key to start position (dash lights on) and would not let the car crank over when it would make that noise but after waiting a couple minutes and turning the key to start position it wouldn’t make that ticking and would start right back up again just to die all over again and would begin to make that ticking again and wouldn’t turn on. DOES ANYONE KNOW WHAT THIS COULD BE IM STUCK, Thanks for any information 🙏