Reply With QuoteThank you! Much appreciate all the info!
Big Time Poster
It does not matter as the tranny has it's own ECU for an AT, not sure about the 6-SP. I used the ETM electrical wiring diagrams to compare my 4.0 ECU to be used with my 3.0L AT and it had it's own ECU for the AT so it works fine.
Big Time Poster
Thank you! Much appreciate all the info!
-AJ
-Two E30s, an E34 and an E46-
Grand Master
You can use the 540i ECU - but you have to swap the ignition barell over from the 540i, as well as the sensor ring, logic unit in the steering column and all the other bits and pieces that go with it - you'd have to unpick the 540's loom.
This means the old 540is key should happily start your converted car...
The key is coded to the ECU not the EWS system if I remember correctly? Shogun had an excellent post a while ago detailing all the parts of the EWS systems - and they're damned complicated.
Big Time Poster
Can I use an ECU from a '94 540i? The '94's didn't have EWS, right?
I found a 4/93-built 540 locally with an ECU --- it is an Automatic car, but I should be able to use it.... ?
Last edited by Panzer Captain; 10-18-2007 at 03:58 PM.
-AJ
-Two E30s, an E34 and an E46-
Grand Master
Non EWS ecu should work fine - though if it's out of an auto the idle might hunt a little bit ie +/- 100 rpm - there's a fix for that though all over the internets.Originally Posted by Panzer Captain
Big Time Poster
Will an ECU ending in 262 from a '94 740i work?
-AJ
-Two E30s, an E34 and an E46-
Big Time Poster
-Bump-
-AJ
-Two E30s, an E34 and an E46-
Big Time Poster
-Bump-
-AJ
-Two E30s, an E34 and an E46-
Big Time Poster
Help - Anyone know?!
-AJ
-Two E30s, an E34 and an E46-
Big Time Poster
Bump for help!
-AJ
-Two E30s, an E34 and an E46-
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