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A grey Manhart-Performance BMW M6 F13 in London, with an Akrapovic exhaust system Facebook: Here is a grey BMW M6 F13 Gran Coupé by Manhart Performance giving some nice sounds in London with its Akrapovic exhaust system. A dyno run gave it , so it must go as well as it sounds! Throughout the video its modifications change - first it gains a carbon bonnet, then towards the end some chrome red wheels. I think this car looks amazing! Flickr:
