Quote:
Originally Posted by Scott@Bjorn3D
But he is running CAT Less. The sensors are not reading anything.
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That is incorrect....there are 2 sets of 02 sensors on the car, one set before the cats ( which will be in the collector of the header ) and one post cat ( in the cat or the off road pipe ).
The rear 02 sensor are disabled in the PCM so they don't throw codes...the front 2 are still sending info the PCM to determine A/F ratio.