5.0L Error Codes 305, 305 & 1504
Figured it out. When I pulled the head sometime back several of the fuel injector harness clips broke. Looks like the harness pulls back just enough as it heats up to cause the problem. Pushed down on 5 & 6 injector connectors and the problem is solved. Man do I feel silly.
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Tubular Intake, GT40 Al Heads, 65MM TB, Buddy Rawls Cam, 190lph Pump, 19lb's w/SCT tune, Scorpion 1.72 Rollers, Sportline Springs, MM Subframe Connectors, Lower Control Arms & Caster Camber Plates, FMS Front & Rear Upper Control Arms, Tokico Blues. 267HP and 322TQ at the wheels