At least on my 92 535 they do.
I was just looking at this page, http://www.nmia.com/~dgnrg/page_35.htm that contains hidden codes for the OBC. Specifically, it's for the 7 series. I was wondering if these all work for the e34. In particular, amperage(beats having to do a load test) and instantaneous speed.
I can't wait to try, but i'm away from my 525ia this week.
Give me info guys. Cure my curiousity!
thanks,
At least on my 92 535 they do.
Yeah, they work on my 89 525i with M20 motor as well.