I believe I recall a number of articles or advertisements that allowed an owner to plug their laptop into their new Corvette and change the rom chips. Is this possible with an M5? I would think that the code would be a simple "if then... go to..." Probably a predetermined rpm in a given gear.
My only desired programming change would be to unshackle the top speed potential. I can understand why BMW might attempt to claim that the slightly higher redline used on the Dinan chip could be a possible cause for engine damage and void the warranty.
Anyway, just an idea I thought some of the high tech talent commonly found in M5 circles would be able to shed some light on.
Chuck