In my opinion the best diagnosing system for our cars is the INPA package. I know there are a few others very experienced with this, and are welcome to contribute. I will try to keep this organized and updated, as best as I can.

To keep it relevant to the Z3 subforum, I would like to keep this focused about Z3 diagnostics. I recommend this to be used for Q&A as well. Instead of me and others answering one by one, I wanted to make this thread a collection of my experiences, and others' experiences with diagnostics. Lately there have been so many threads regarding computer diagnostics/code readers. It is about time we had a diagnostics thread just for the Z3 section.