Which exhaust sounds the best on the BMW M6 E63? Eisenmann or Hamann?
Check out two BMW M6 E63's with a custom exhaust system! One has an Eisenmann exhaust, the other one a Hamann exhaust. Both sound epic in our opinion, but which BMW M6 do you think sounds the best? Check out the video including revs and accelerations and let us know what you think!
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