Instead of writing a random post I created this document using the ETM documents for the non vanos M50.
This details which wire from the loom goes where. Best seen by their colour, double checking is important of course.
Should make it easy for anyone wanting to wire their own VEMS ecu´s to M50 non vanos looms.
Shortly I´ll make more of these for other BMW engines.
http://www.vems.hu/files/M50Turbo/VEMS_ ... _Guide.pdf
Has provisions for
flyback, tacho, boost control using the charcoal canister connector, serial connection, wideband wiring, ground addition, check engine light, road speed from cluster.
report any errors to me and I´ll update the document.

