Please find attached XDF I have made for Motronic 2.8.1 ECU used in Omega B for X30XE engine.
This is still work in progress as I have many maps to describe.

One good (IMHO) thing is that it uses dynamic axis - all axes are taken from binary and could be edited easily.
That file contains 151 maps and all of them are included with their axes.

"Users manual":
 - maps with visibility level set to 1 might be named badly but I am sure what do they represent
 - maps with visibility level set to 2 are not tested but should be well defined
 - maps with visibility level set to 3 are not documented
 - scalars with visibility level set to 3 are just my guess (RPM limiter)
 - maps with visibility level set to 4 are axes for other maps
 - all known axes descriptors are used and converted into meaningful units
 - this XDF does not cover cheksum as I am not able to figure it

Stock binary for this XDF could be found here.

EDIT: Now the file should be uploaded.