You file is empty.. no data. An O2 at .45 volts (450 Mv) is not switching, PCM puts 450 Mv on the sensing leads and as soon as the O2 heats up and starts switching (100-900 Mv) it will override that voltage. Your O2 is totally bad, possibly open heater or burnt wires. I have had that problem once, an open heater and with headers the car ran like crap, bucking, stalling, etc. You need to fix that before chasing other failures. Swap the O2's left to right to isolate to O2 or circuit problem.
By the way I assume you are using TunerPro RT, not TunerCat as TC does not log or display active engine sensor data. What did you IAC read at idle ?
I'm Bob.. 1994 Z28, A4, Stall, CAI, Cam, RR's, 342 rear, LT's , CatBack, Tuned
Last edited by bobdec; 11-06-2012 at 10:27 AM.