Based on the BMW 550i, German tuning firm AC Schnitzer is debuting its latest innovation at the 2011 Geneva Motor Show. Judging by the exterior, one may think it's just simple exterior tuning job. Besides the impressive update here, the real entertainment lies under the hood. Beginning with the standard 4.4 liter V8 with 440 hp, the tuner has upgraded it to a new output of 540 hp.

The extra power allows the car to go from 0 to 60 mph in 4.5 seconds and a top speed of 200 mph. AC Schnitzer also added a new front spoiler and chromed front grille, a new carbon front spoiler center part, carbon air ducts and carbon side skirts. And because of the engine upgrades, there are new hood vents for better ventilation. There's also a new roof spoiler and carbon rear diffuser. They also added a new exhaust system and twin sports rear silencer and a chromed "Sports Trim" tail pipe. No official pricing was given.