BMW is tipped to be testing a prototype of its BMW M5 sedan with a pair of turbos attached, possibly for a midlife upgrade, to match its rival the new Audi RS6. Several tuning companies, however, have already proven that a turbocharged M engine can do wonders, and one such company is G-Power. The German tuner has a twin-turbo version of the BMW M5 with around 730hp on tap with just 0.5bar of boost pressure. That’s close to a 50% increase on the standard M5’s 507hp output, and the standard car is by no means slow. At the recent Nardo high speed test, the Hurricane M5 reached a top speed of 322km/h but had to give up because of an electronic problem. According to developers, it can easily reach speeds of above 350km/h. The engineers are already at work to build a version that can run 1.0bar of boost for an output above 800hp. G-Power is expected to reveal full details about the latest tuning pack at the end of the month.





