I thought there were rumors that the extra power would be part of a m performance option, but i guess they made it standard.
'12 550xi M Sport
Carbon Black | Black | Cold | Sound | SAT | HUD | Apps
Dinan Stage III Software | Black kidneys | M5 trunk lid spoiler | 35% Llumar tint | Passport 9500ix
'13 X5 50i M Sport
Carbon Black | Black | M Perf | 20" 333M | Lux Seat | Active | Adaptive | Cold | Tech | Sound | Prem 2 | Apps
Black kidneys | 35% Llumar tint | Passport 9500ix
'11 335xis, '11 X5 50i, '08 BMW 535i, '08 BMW 335xic, '05 Audi S4, '02 Audi TT Coupe