Originally Posted by PeterM
For the catless downpipe can't we just put a sparkplug non fouler so the O2 is not in-stream of the exhaust and not throw any codes. I used to do this on my vw and worked like a charm.
We have to see if any other cases of it even occur. This is the first an only thus far. We tested on our end for close to 3k miles now with no lights at all.
A spacer is always possible if needed.