E63/E64 M6 Discussion
I'm upgrading my M6 Cabrio 2007 to M6 Cabrio 2010 for a low mileage find. I finally have the two cars side by side and my 2007 sounds so much deeper, throatier, it really rumbles. The 2010 sounds smooth but seems to have the same power. The 2007 has sounded this way since I got it w 20k miles...