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O2 Sensor Trivia
Why does the car trip a Check Engine Light with the rear O2's disconnected even though they are turned OFF in the programming?
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Why do the Wideband installation instructions tell you to put the O2 sensor in upstream of the cats because it will give inaccurate readings if the sensor is placed downstream of the cats when all major dyno's use a Wideband sensor that sticks into the tailpipe?
(I really don't know these answers, I am just asking)
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I heard it on the internet, so it must be true.
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