With a twin-turbocharged 4.4-liter V8 that's factory rated at 552-horses (560PS) and 680Nm (501 lb-ft), the new BMW M6 Coupe is already a very fast car, but there's always room for improvement, right?
German tuner G-Power agrees, and has unleashed a new performance package for the two-door sports car. As always, it all begins with the beast lying under the hood that adopts upgraded software and a lighter (by 12kg or 26 pounds) titanium exhaust system pushing output numbers to 631hp (640SP) and 777Nm (573 lb-ft).
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