Bogged down While In Gear And Sputtered During Acceleration

I never saw where you replaced the ECU. It was suggested in this thread. They will do just what you are saying. Sometimes it starts with hard starting, or maybe a sputter here and there, and some just drop dead. Try another ECU. My opinion of the orange box is the circular file. I had one, and a few friends have had them and they burn up within a year of steady driving.