The N55 is def going to be cracked and tuned.
The real question is how much power is going to be extracted from it via tuning. More aggressive ecu hardware and software was most def put in the N55 to stop tuning at a limit. The ECU is mounted on the engine! by the intake manifold.
And how much can be tuned that the bmw anti-tuning kicks in to stop the fun.
Like when you trip tuner codes when you push the tune too aggressive, you lose tq and such until you re-start the car or until you trip it again.
BT cable is going to be a 100% must have with no excuses with N55.