91 fuel injected 4 banger, 5 speed. Falls flat on it's face when I get past 1500 rpm in any gear under a load, justs acts like it's dieing, pops, let off the throttle and she's idling great but no power. Neutral revving up to 4500 rpm and it falls flat. Opened the shrader valve on the fuel rail and have a good amount of fuel at idle until it stumbles, then it falls way off. I can hear the fuel pump humming. Turn the key on and it primes up. And can also hear it while running.
Any ideas?