I have an 86' 325e right now, besides an 885 head / intake manifold etc., what wiring / ecu do I need to use?
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best bet is to use a 88+ harness with a 173 dme. Theres only 2 wires to splice for the tack and OBC to work. You can still use the eta starter it runs on 2 wires, but the Later harness has 3 wires one you dont need. Also for the Oil level sensor just get one from a late model car. Its very easy, I just finished my swap 2 weeks ago now.
Ohh yeah allmost forgot. The o2 sensor on your eta is a 3 wire, the late model uses a 4 wire. You will need a m50 4 wire o2 sensor or just extend the wires to reach the etas o2 bung.
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