Definitely posting late on this but for clarity for others that wanna play with their E36 ecu, get the
16-pin obd adapter for the ecu port under the hood (the big round connector, where you reset the oil change light at). If you pull from the OBD port under the dash you only get the partial BIN file. You get full BIN from underneath hood through the 16-pin.
Building the bench setup seems like a pain, and the process of getting the ECU(s) from its cubby hole is annoying also. But, that's opinion and definitely seems more full proof, especially if you track the car.
For the most thorough information on this,
OpenMS41 has it all.
