G-Power BMW M5 unveiled with 640 PS

G-Power has officially unveiled their new tuning program for the BMW M5 (F10). Their engines tweaks enable the twin-turbo 4.4-liter V8 to produce 640 PS (471 kW / 631 hp) and 777 Nm (573 lb-ft) of torque.

Source: http://feeds.worldcarfans.com/~r/worldcarfans/Jxfz/~3/7VfWCX1jmBg/g-power-bmw-m5-unveiled-with-640-ps

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