2003 evo 8

Car would not start, fuel pump was not kicking on while cranking. Swapped out the warlboro 255 and now I can hear the pump turning on when cranking. There were no fault codes previous to swapping the pump.

now after swapping the fuel pump, the car will start very briefly then struggle and die. Car throws injector codes now (p0201,202,203,204). Car is using an Omni 4 bar map. Injector resistor is bypassed to run 1000cc injectors. I have checked the injector harness for any loose wires/ rubbing, nothing found.

any suggestions?