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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 10-29-2012, 09:00 AM   #1
danieljardine-1
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Join Date: May 2011
Location: Scotland
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My Ride: 320ci
318i to 323i conversion question on ecu

Hi.. I'm changing my 318i to a 323i , I have a written off 323 & all the nessasary parts however will the 318i ecu run the 323 engine or will I have to swap the ecu accross? If I change the ecu will the central locking ect still work?
Any answers would be appreciated.
Thanks
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Old 10-29-2012, 04:09 PM   #2
MojoJoe
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Join Date: Oct 2008
Location: UK
Posts: 246
My Ride: leaks fluids
Immobilisation is handled by the EWS (manages paired keys) and central locking by the GM5 general module (control lock actuators), so this should still function. I would have thought that changing from a to a 6 cyl would require a different ecu but I have no experience in that area really.

Last edited by MojoJoe; 10-29-2012 at 04:12 PM.
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