After a couple more weeks with the Eisenmann race I'm appreciating this exhaust more and more. The drone doesn't seem as bad as it was initially, not sure if it's going away or if I'm getting used to it, crazy thing.
Something I really like about it is that it doesn't become obnoxiously loud as the RPMs climb, actually the exhaust volume in the cabin goes down a little, and tone becomes more defined at higher RPM, actually similar tone to stock but still louder and more exotic. It also allows the engine to be heard which is so intoxicating as we all know.
Really impressed by the personality of this exhaust!
2015 M3 6MT | Yas Marina Blue, CF Roof, Cloth | Adaptive M Susp, 437M 19" Silver | Stripper
2013 X5 xDrive50i | Carbon Black | M Sport + M Perf, 333M | Loaded