okay everyone hopefully my last question. I have been through all the post and seen something yesterday in regards to a secondary O2 sensor. I have a 89 CRX with a b16A swap that came with the car when I bought it. Since the I have done my own converts to it and getting a new cat converter, cold air intake, NGK plugs and full cat back exhaust. The O2 sensor is brand new but still failing the emissions test here in Canada. The driving part is all good just the idle is killing me. Also at idle my air/ fuel is running rich all the time. Need some help and will post pictures tomorrow of the wiring to show you all and see if the previous owner has wired something wrong.