Fuel pump issue..Help

Ok so i just installed a 255 fuel pump in my 92 integra before i did this it ran great. Anyways i put in th pump and when i come to stop it would die. But the pump would kick right back on but wont start. but then if i wait a few min it will i have a stock FPR and dsm 450 injectors i have alomst a half of a tank of gas…
If anyone has any input to get this fixed let me know
Thanks James

Stock ecu, motor?

Chipped ecu. Its a all stock b18 turbo… I drove it to my shop with no problems then installed the pump and now its shuting off on me. But the thing that gets me is when it dies i can turn the key on and hear the pump come on but it will not start.

Is it chipped and tuned for the injectors? Sounds like thats the problem there if not.

Its a basemap for for the injectors but as for the fuel pump no its not… i didnt think that a 255 fuel pump would have made that big of a deal…

Did you ever get this resolved? I had just the opposite issue…my stock fuel pump would do this, then I swapped to a Walbro 255 and it fixed the issue.