Very interesting, B6 is almost 1 sec faster than the already monster M6 in mid range 80-120/140/160 km/h flexibility 4th/5th gear acceleration. Over boost function? Different gearing?
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2012 750iAH Mineral White
2014 550i GT M Sport Alpine White
Last edited by ayu910; 04-24-2013 at 07:58 PM..
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