I HAVE HAD THIS PROBLEM FOR A LITTLE OVER A YEAR. IF ANYONE HAS ANY IDEAS, I AM ALL EARS. DURING WARM UP, WHEN THE NEEDLE JUST STARTS TO CREEP OFF OF COLD, THE CAR STARTS TO MISFIRE. IF I AM DRIVING THE CAR AT THIS TIME, THERE IS A SUBSTANTIAL LOSS IN POWER AND SOME POPPING BACK THROUGH THE INTAKE IF YOU GIVE IT TOO MUCH THROTTLE. BUT, WHEN IT FINALLY GETS UP TO NORMAL OP TEMP, IT SMOOTHES OUT AND RUNS GREAT. I HAVE REPLACED THE FOLLOWING SENSORS: IAC MOTOR, TPS, AIR TEMP SENSOR, COOLANT TEMP SENSOR FOR THE ECM, BOTH O2 SENSORS, THE ECM WAS SWAPPED FOR AN A9P UNIT BUT THE PROBLEM STAYED ON, THE ICM, DIST CAP AND ROTOR, WIRES (FRPP 9MM). TIMING IS SET AT 14'BTDC, I AM RUNNING AUTOLITE #26'S