What might cause a 1990 accord to stall even after having a tune up and fuel injection?

EGR VALVE, FUEL PUMP, FUEL REGULATOR, FUEL FILTER,BAD BATTERY/ALTERNATOR, BAD VACCUUM LEAK... YOU GOT TO EXPLAIN WHAT HAPPEND THAT LED UP TO THIS STATE! JOSE

Wilke339's answer:

If it stalls while driving, particularly when letting up from the accelerator, replace the fuel pressure regulator.