Well, instead of posting my own thread, I will add my thoughts here.
Just had my Eisenmann Race installed on Friday with stock x and connecting pipes. First time I started it after install, I was like...WOW, that's loud. Driving left me very impressed with the agressive growl under acceleration. However, it would be nice if it wasn't so loud, all the time. Even when I am doing a 0-60 in 15s, it sounds like I am driving at WOT.
Cruising, it's a bit louder than stock and I find that it drones between 1800 and 2000 RPM. At 2500RPM, it sounds great.
Startup will be an issue. With my old car, which had a 6MT, I would have to roll it out of the garage and onto the street before starting it if I was leaving before my kids woke up. Now that I have DCT, that isn't really an option anymore. I guess I will have to plan ahead and leave the car outside if I am anticipating leaving before my kids are awake in the morning.
Anyways, for now, I love the exhaust. It definitely turns heads, for better or worse. It will take a little getting used to and some "essplaining" to do to the wife.
2009 E92 M3 Le Mans Blau on Schwartz. DCT, EDC, TECH PKG, M Drive. RAC RG63 19x9f ET22 19x10r ET22, Yokohama Advan Neova AD08 265 30R19f 295 30R19r, Ground Control Coilover Conversion, Eisenmann Race Exhaust.