Stalls out when accelerating. How to fix? on 2002 Nissan Xterra

I have already replaced the fuel pump, fuel filter, and mass airflow sensor; but the problem is still there and I'm out of ideas on how to fix it.

Asked by for the 2002 Nissan Xterra
2 answers
Possibly blocked catalytic converter
do u have any eng codes,if so post so we can adv