When it comes to updating BMW models, German tuner AC Schnitzer always does an amazing job. So when BMW unveiled the new generation 6-Series Coupe, we knew it would just be a matter of time before AC Schnitzer found something to improve upon. The complete BMW 6-Series project will be displayed at the Essen Motor Show.They can do almost anything they want on the exterior, but the real deal is under the hood. AC Schnitzer did exactly what we would have expected from them by raising the output up to 540 HP, from the standard 407 HP. They have also added an exterior package to improve upon the BMW’s aerodynamics for better performance. These changes help the 6-Series Coupe sprint from 0 to 60 mph in 4.3 seconds, an improvement over the standard 4.8 seconds.