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Old 09-30-2012, 05:10 PM   #99
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Join Date: Aug 2009
Location: gross deutsches reich USA
Posts: 958
My Ride: 323i with S54
Originally Posted by new//M3fan View Post
You are correct. Euro 3 keeps cat monitoring on and sap off. I passed emissions with that tune.

Euro2 deletes all emissions and you can set the idle mixture manually through dis.
To me it looks like MS43 partial read 64kb, has the "boot ID string" at the start of the file, like 0000 hex to 000B hex. I suspect that this is used for booting versions of components like, CAN detection, climate control version, exhaust version, fuel system version, idle control version, knock adaptation version, emission version, ews version...

And it looks like one hex byte determines if that option is used or not, for example 30 to 36 hex is components is booted, and 60 to 66 means components is not booted.

I just speculate on this, because I compared many different versions of MS43 software.
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