E30 ECU

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SAP1
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Post Mon Sep 07, 2015 8:12 pm

My ECU needs replacing on my 1989 318i

I have found one on EBay with the same part number which is 0 261 200 157 (Brown label)

The seller states that it is from a 316i/318i. Apart from numbers will this just be a straight swap from my current ECU?

Thanks in advance
Andyboy
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Post Mon Sep 07, 2015 9:49 pm

318i and 518i ECU's are interchangeable as long as they are M40. A 316i ECU will have the wrong ignition timing.

I have a good M40 1.8 ECU here, £25 posted.
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Brianmoooore
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Post Mon Sep 07, 2015 11:43 pm

157 is correct for a 1.8 engine. The equivalent ECU programmed for a 1.6 is a 174.
HairyScreech
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Post Tue Sep 08, 2015 8:49 am

Surely that is then just a case of swapping the chips over from the 318 to the 316 ECU?

Same as with the M50TU EWS and non EWS ECUs?
2.8 development thread http://www.e30zone.net/modules.php?name ... c&t=170822

m3.3.1 m20 thread - now running, chip needed - any volunteers?
http://www.e30zone.net/modules.php?name ... =viewtopic&
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SAP1
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Post Tue Sep 08, 2015 10:28 am

Thanks for the input, Brian you da man thanks :D