Thanks for that. Now I understand.

I note some ELM 327 modules available on eBay from Hong Kong.

Hi, my first post at this intersting site. Am I correct in assuming that I should use either the KL interface cable OR the ELM 327 interface? How does the ODBKey fit into the scheme of things? I presume it's a software driver. I'm intending to use it on both my Fiat Punto 1.9 diesel and my Alfa 159 ...