Both the X5 M and X6 M are fitted with a newly-developed 4.4-litre twin-turbo V8 making a confirmed 555hp (408kW) at 6,000rpm and maximum torque of 500 lb-ft (678Nm) between a very broad band of 1,500 and 5,650rpm. The turbos produce maximum boost pressure of 1.5 bar. -- Kur diskutOtOjai?