It can only sometimes be felt, unknown if it actually is misfiring. The motor was professionally rebuilt, new distributor, plugs, wires, injectors, fuel pressure regulator. Randomly while cruising the misfire count will rocket and take the torque convertor out of lock. I wonder if its a glitch in the computer? It runs great under any sort of load. I dunno??? I know I can take off the misfire count... But I have had this problem since the 411 swap.

23lb injector 14.73 afr decel gone fuel VE trim maf trim idle airflow maf stock startup same.hpt

21-05-15 16-03-27.hpl