A few people wanted to hear the exhaust from inside the cabin, so here you go. I apologize for the poor video quality, it's just a point and shoot mounted on a gorillapod flex mount. It's a bit shaky, but I think it will give you an idea.
This is just some mild street driving, until the end about 1:35, when I open it up a bit to chase down an M5, thought it was an M3 in the clip
I've got a few clips, I'll link them up once they are done processing on youtube. Here is the first one, enjoy
This next one is on the freeway, to show that there is no drone at cruising speeds, mostly all the noise that you hear in the video is road and wind noise. This set-up is barely any louder then stock while cruising steady.
Ok, last in-car clip, some mild cruising on streets in 3rd & 4th gear, WOT at end.