Quoting mitsuturbo:
After reading a lot on the link forums about this subject, I decided to go with the stock location. Link v3 seems to do a fine job with NB sim internally, so i didn't see any good reason to run a factory NB.
Yes, NB sim works well in the stock location, but is slow reacting farther back. This is adjustable in direct access, but hard to get perfect.
Best method, IMO: run a stock NB in the o2 housing and a WB downstream for logging. Otherwise you use WB only and simulate NB. Both locations have drawbacks. Slow NB sim reaction or possible shorter sensor life. Im aware of what the PLX manual states, but when the guys that created ECMlink are saying they've seen zero issues with the WB sensor mounted in the stock o2 location, I take notice. They seem to know their sh*t, yanno?