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You can code it yourself. Shawsheridan on this forum walked me through coding the brakes but its been awhile so i don't remember. I posted instructions on how to do it on this forum somewhere.
If you are having the dealer do it then i would let them code it. It should NOT wipe out any of your own coding since they are just adding something and not recoding your entire ecu.
All my coding was left intacted after coding for the brakes.
MAKE SURE THIS IS DONE. YOUR BRAKES WILL FEEL LIKE THEY AREN'T WORKING PROPERLY UNTIL THE CODING IS DONE. I drove around for a few days without coding and the entire time I thought something was wrong until i saw a few threads on the 3 series forums saying the same thing after they got their MPBK installed without coding. After coding its night and day difference.
Alan
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