I used a narrowband o2 in my ta with no problems. I bought an af pigtail adapter from pace performance because it has the extended reference wire. Then hooked it up to a 12v constant, ground, and a switched on power source. I really don't understand why it would be doing that, but I have noticed that these friggin grand prixs literally "lose their minds" if you change any little voltage with that invloves the pcm. So maybe bio is right, the sensor is pulling one volt too many through the pcm on that signal for the O2 so its going hay wire.
