ka24de fuel issue?

[TwistnItSideways]

Got
a bit of an issue. 96 ka24de in my 92 chassis.

Today started the car cold and it took 3 key turns to
start. Then when she started up she spat and
sputtered and when I stepped on the throttle the
rpms went way down and died.
Started up again and let it idle for a sec and started
to drive and she sputtered for a while. But after
driving a bit it didnt feel any different then normal.
Changed out the fuel filter at work old one had black
stuff coming out of it. so I assume everything was
fine. She started after 4 cranks idled fine throttle
response came back.
finished my day of work
went to go start her again and she cranked over but
when I tried giving her gas it would try and die again.
The throttle response was terrible.

Got to driving and she spat a little bit but after driving
for about 4 minutes or so she ran fine. No issues at
stop lights or anything like that.

Im leaning towards a bad fuel pump or even a maf