So since it's an 03, you're somewhat limited by the ecm capabilities. Not to worry though. You'll want to simulate the NB to the rear (stock O2) location, not the front. You can use the logworks software to record it as it runs, do playback and adjust the calibration as required. Run it with the widebands and displays as it is and observe the gauges so you know what it's doing BEFORE making any other changes. I found 14:1 at cruise works nicely, 13:1 or even a little richer for power.