Originally Posted By: K447
Is there a WiFi OBD2 module that uses the genuine ELM chip inside?


I don't know how one would be able to tell without cracking the thing open. I guess some of the Amazon reviews might say (as you already discovered), but how to be sure? I don't know.

There was a similar thing with USB-to-serial adapters a few years ago, where there was a common FTDI-brand chip that had a lot of knockoffs. FTDI quietly changed its Windows driver to detect a knockoff if one was plugged in, and twiddle its PID. https://www.sparkfun.com/news/1629 - Fun times.
_________________________
Tony Fabris