Those two cans to the left of the picture (probably right off the headers) look like cats too. The #1 item is labeled as cats too. I'd be surprised if there were no cats right off the headers since that seems to be the norm for newer BMW's in oder to get the first set hot ASAP.
Let me get this straight... You are swapping out parts designed by some of the top engineers in the world because some guys sponsored by a company told you it's "better??" But when you ask the same guy about tracking, "oh no, I have a kid now" or "I just detailed my car." or "i just got new tires."