I've heard something about an o2 extender or something like that that screws in where the o2 is supposed to go, then the o2 screws into the part that was just talked about. Anyone know what I'm talking about?

 

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So after the day is done, you dont want the 02 sensor to work? You want something to trick your ECU into thinking the O2 sensor is working?

Prob not a good idea, your 02 sensor monitors your A/F ratio, and makes nessacairy adjustments when its out of wack.