Is your M5 here yet?
Originally Posted by Stealth.Pilot
I think there could be one of 2 explanations:
1) the 550i engine is identical but detuned.
2) the 550i does not have twin scroll turbo chargers.
2011 X5 xDrive 35d Red/Black: ZCW, ZPP, ZRC, ZTP, 300, 386, 496, 4AB, 6FL, Combox, LED Coronas. 04/11 Production