personally dont think the car needs anything extra.
but when I was at my dealer in UK for m5 oil service they showed me some of the data they can pull off the DME and it's pretty substantial so it would not surprise me if they were able to say that you have gone over a limit they set.
Neil J. //
McRae -- Alive and Kicking -- neil at DOMINO.ORG --///M ARMY
M5 DCT CP Alpine White -- M135i Alpine White -- M4 DCT Alpine White