BMW locks their crap down tight so it's a pita to tune one. I would not be surprised if what the dash boss can see is limited. It if can pull DTC though, that would be helpful.
FYI, they changed over in 2007 to the turbos and the ECM changed then as well.
Then in 2008, they changed engines because the 2007 engine sucked and was having failures.
A lot of the extreme mini owners remove the Mini ECM and replace it with a Vipec to get rid of all the annoyance of the stock one.