How close do you think I can mount the O2 to the head? I have completely different type of headers with all 4 primaries going to the back. The primaries land in a common muffler far down the line.
I am afraid if I put it in the muffler section it will be too far away and not heat up adequately. Since they need to be mounted at least partially upward, this limits my location to the top of the runners here. My concern is that the O2 sensor does not get too hot:
In the headers I made for the MG I run them about a foot off the head. You can see the port on the right side of the right header here:
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