Bugger, the article I've is over the quite very early United kingdom aw11 ecus which didnt manage to run a cat over in the UK, so no extra details about exactly what the O2 sensor does below. Great automobile products and wonderful customer care. My 3rd acquire from JJH and https://4ageblacktopforsale61482.angelinsblog.com/26490138/everything-about-4age-engine-for-sale