I have a 1990 E34 M5 3.6 which is badged as a Hartge with what I assume is a Hartge interior. The engine appears to have ben worked on at some tiem teh history is not complete. I understand it was chiped at some point in teh past and producess 300 at the wheels I have a dyno chart to show that. I was told in now produces about 360.
It's in good condition and I am just getting it reday thsi week for a bit of summer use. I have never seen another any idea about these cars?