ECU o2 Void Post Cat
 

Is there a way to void out the post cat o2 reading for a bad sensor or if you just want to plug it's hole and extinguish the engine lite. Other than telling you the cat works or not, what does the 4wire do?

It's possible to buy O2 simulators for the downstream CAT, that prevent the CEL from coming on, but I can't recall who does them, I think it was a supplier of exhaust tuning parts. I think I saw that on the 6th gen forum.

Because you deleted the cat, or because you are to cheap for a new sensor? If you deleted the cat, google O2 sensor spark plug anti-fouler.

http://www.ebay.com/itm/O2-Oxygen-Sensor-90-degree-18mm-test-pipe-extension-M18-X-1-5-18-mm-02-/251423676384?pt=Race_Car_Parts&hash=item3a8a04d7e0&vxp=mtr

i am afraid that removing the dead sensor will leave a rust gap in the thread and surrounding pipe material rendering my new sensor useless. In view of the age of the car, it occurred to me that rather than change the pipe to more solid material, I might as well leave the old sensor where it is as a plug. I have a new plug and play ready to go but wary of touching it. I will probably have to bridge the cat to resonator with some new pipe at some point. I will check your google tho...

Just change it. I have never had an O2 bung strip or "pull " the threads. You need a sensor plumbed into the pipe one way or another, unless you get an alectronic sim.
http://www.o2simulator.com/index.php...9ed02a9b19b570

ok, thanks. I will give it a shot.