FAQ from iTunes. - Not sure what this means for the M3.
Which vehicles support all forms of data recording in M Laptimer?
Vehicles can record all data with the latest Professional generation of
navigation system, available in selected models since July 2012.
The following vehicles equipped with an older generation of the navigation
system do not support recording Throttle, RPM, and Fuel:
* Recording Throttle, RPM, and Fuel may be supported for certain vehicles
of this model