As we seem to comment every time we post on something that Finkbuilt Steve has put up, we simply don't check his site often enough. A half-year ago or so, we noted that he was putting together an open-source Megasquirt- controlled EFI system for his BMW 2002. Well, now he's done, but for tweaks here and there to the software, and as he notes, "Finally, my once high-tech sports sedan can keep up with today's econo-box hybrids."
Fuel Injection Conversion Complete [Finkbuilt]
DIY EFI: BMW 2002 Fuel-Injection Conversion [Internal]