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      04-30-2012, 03:05 AM   #157
Mike Benvo
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Drives: Harrop M3 / F10 M5 / F82 M4
Join Date: Apr 2008
Location: SoCal

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1990 BMW 735i Turbo  [0.00]
2008 BMW M3  [3.50]
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Originally Posted by PhillyNate View Post
Perhaps I missed it somewhere in this thread but I assume new 2012 M3's are delivered with the 231E software. What is the cutoff going backwards of cars delivered with this software upgrade?
Yeah, new 2012's likely have 231E. Anything after 8/11 should have 231E. No point in upgrading to it unless you're on something super old.

Edit: After further research, it appears that 2011 cars may come with ISTA/P 2.44 or .43, and possibly have 220E software.

Here are the integration levels:
2.46.1 and 2.46.2 are E89-12-03-502.
2.46.0 is E89-12-03-500
2.45.X is E89-11-09-506
2.44.X is E89x-11-09-505
2.43.1 and .2 is E89x-11-09-503
2.43.0 is E89-11-09-501
2.42.X is E89x-11-03-511

I suspect that 231E was introduced around 2.45. I just checked my car and it has 220E.

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Last edited by Mike Benvo; 05-12-2012 at 04:23 PM.