I got a VAFC 2 hooked up and my car has been running extremely rich because of my setup and i just put a adjustable pressure regulator on and to it up 5500 the light came on and it tapped out. Is this because im running too lean or what could be the reason for this i think i will turn up the fuel pressure a bit and see what happens

 

you need help with your tune. a good idea is to start back at baseline and retune. find yourself a tuner before you cause engine damage.