PCM Swapping Precautions

[Dominic]

I was curious if I swap my PCM with a 2001 M5 V6 off another car, will I loose my odometer readout and get the other car's? (This would suck)

[strange_trp]

the service literature is not really that clear on this question, but the odometer information should be stored in another module, maybe the EBTCM? i don't think it is stored solely in the PCM, if there is a place for it in the pcm at all.
the PCM shares information with several other modules.

[DominusEtDeusNatus]

It's probably not on the PCM chip itself, but it's on another chip that's on the same circuit board. Unless 2000s are different. My 96 doesn't have the digital odometer.