German tuner G Power has started out working on the new BMW M5 F10 and they are so excited about it. They haven’t done anything yet, but released a teaser to announce the first stage of tuning for the M5’s 4.4 liter twin-turbo V8 is good for 620-hp. G Power as you know is famous for their world’s fastest sedans based on the old M5, the Hurricanes. It is only a matter of time before they come up with a new Hurricane M5. It’s going to be fast and destructive. You’ve been warned!