Originally posted by warmonger:
Hey, you don't want it to run so far back that the exhaust is too cooled down!
Must be before the main cat. I'd recommend the y-pipe where the two banks come together for the best measurement.
That's where I have mine. My tuner was very appreciative that mine was already there when he went to hook up the wideband. Guess it was good planning on my part having it welded in before I had my headers/y pipe re-coated.
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