Quote:
Originally Posted by Chuck33079
You'll need to find a place upstream of the cat to weld in a new bung for the aftermarket O2 sensor. The car needs the O2s that are in there now, so you would need an additional sensor for an aftermarket gauge.
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That location might end up having to be on the header. I don't know if there is enough room on the stock cat to weld that bung in.