[ColdList]

As much crap as this is going to stir, on very good authority I can tell you that pretty much every dyno result anyone has posted is utterly bogus.

With the F10 you must log the ignition timing curve, air intake pressure (must be 1:1 which NO ONE is doing), and RPMs and then match them to the proper tables. Nonetheless, the simplest of the variables always ignored due to the limiter is that the car must also be run 1:1 in 5th gear. In Europe, a dyno run will void your warranty on the F10 M5. Not sure I would press my luck further in the US.

Like I said, I know these comments will ruffle a lot of feathers but so be it. Regardless of anyone's belief or opinion, this information comes from an individual who frankly knows more about BMW turbo cars than ANYONE in the world.

Do NOT allow anyone to try and hack your F10 ECU(s). Cannot be done. This is not an E60 any longer.