I have the Esienmann race, it is perfect it is loud when you hammer the throttle but on the hi way you don't hear it. I now have catless down pipes and it boarders on almost too loud...almost. Before the down pipes it was perfect, it was more of a sports car feel than luxury SUV.
I have been looking at a c63 for a second car, got any pictures of yours?
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X5M, Eisenmann exhaust, 22" HRE wheels, catless down pipes, Stage II tune/X5 Diesel, Lowered & Tuned
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