Bugger, the post i have is around the pretty really early UK aw11 ecus which didnt manage to run a cat over in britain, so no excess information about what the O2 sensor does here. from A different Discussion board wrote:Probably I've missed this, but there is a massive tumble https://raymondmtesb.worldblogged.com/32516432/top-guidelines-of-4age-20v