idk why everybody is so upset about the N55 block being used for the f80. It's a fine engine and it will be different. Turbo is the game right now and they will heavily modify the entire turbo system (from intake to exhaust). It will prob have a linear power curve all the way to 7K to mimic a NA feel in the upper revs, yet still have the flat torque curve from 1500-5000 rpm. Remember, this is a production sports sedan/coupe, not a tuner. I guarantee it's not going to be running some crazy high boost number, which will allow the car to make repeated runs.
2014 335i RWD: ZMM, ZDA, ZDH, ZPP, ZTP, 2NH, 2TB, 5DL; Z4A MPPK; AW ext / VB int
2014 ML350: P01, R33, 297, 319, 846, 864, 889, 996; LB ext / AB int