prowrench

1st Check all your air intake bellows rubbers for cracks and leaks they can seal fine at idle but open under accel and cause a lean cond. then check fuel filter Pressure can be fine but the volume can be down. You should be able to blow through the filter with relitive ease. if not rep it. If thats fine check ex flow have some one hold it at about 2500 rpm in neutral and go back and feel the exhaust pressure should blow a shop rag out 90 deg. dont put your hand up there though you'll cook it. if thats fine could be the spring in the air flow meter could be getting weak. there are other elec FI things but not likely, most likely false air though thats it most of the time. check all those rubber parts close. Start with the simple and go from there
Prowrench

John Patterson

check your afm