Bugger, the posting I've is within the extremely very early British isles aw11 ecus which didnt seem to run a cat more than in britain, so no additional facts about exactly what the O2 sensor does here. That's what the resistor pack on some versions in the 4AGE does.Your MicroSquirt® https://4age-20v71357.thezenweb.com/top-latest-five-toyota-4age-urban-news-64420086