O2 Sensors replacement

[hancock1701]

Originally Posted by JayG

Here is a place that sell Calif legal replacement CATs
$170 rear / $186 front

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The problem with those is that I can't imagine them being welded in place of the pre/integrated CAT. There doesn't seem to be enough space. I had a thread recently asking about putting these universal cats in place of the other downstream cats, and move the O2 sensors, but that wouldn't work either, due to technical and other reasons too.