m325i 705 Report post Posted March 12, 2006 Whats the difference between the 073 ecu and the 173? Is one better? Are they interchangable? Shot Quote Share this post Link to post Share on other sites
Gus 5 Report post Posted March 12, 2006 073 - Pre FL 173 - FL voila probably some more diffs too though Quote Share this post Link to post Share on other sites
m325i 705 Report post Posted March 12, 2006 are they interchangeable? Quote Share this post Link to post Share on other sites
Gus 5 Report post Posted March 12, 2006 FL/preFL have different ECU plugs on the engine loom Quote Share this post Link to post Share on other sites
BMW POWER 2 Report post Posted March 12, 2006 FL/preFL have different ECU plugs on the engine loom If only I could carry you around in my handbag, to every car sales that I've been to with E30's in it.Gus - The new portable E30 thang.. Quote Share this post Link to post Share on other sites
Carl 3 Report post Posted March 12, 2006 Motronic 1 has the 2 row pin array on the ECU Motronic 1.3 has the 3 row pin array on the ECU Is the same across the 2.5 and 2 engine systems. The early motronic doesn't have 02 or catalyst support. Quote Share this post Link to post Share on other sites
Gus 5 Report post Posted March 12, 2006 aint nothin but a Gus thang baby replace Gus with G and its a song holla husslas Quote Share this post Link to post Share on other sites
