I am in the process of accumulating parts for an OBD2 M52 swap into my '87 e30. I will be needing a DME flash to delete EWS and a few other OBD2 annoyances, and hopefully get a tune for OBD1 intake, S52 cams and a 540i MAF at the same time.
From my research so far, it looks like the racers market offers the best value/service, but since most of the 24v swap info is on r3v, I don't know if there is anyone local (southern ontario) who does OBD2 tuning for BMW motors specifically.
If anyone has any info on places I could look for this please let me know