The sound definitely improved with the resonator delete and is now MUCH more improved with the EST exhaust - my daughter can hear me come home 2 minutes before I get to the driveway!
Has a pseudo-exotic sound - not ricey like a 4-banger with a fart-can, not as deep as a Stillen-V6, but it is quite nice! Not as sexy as a Maserati's sound though!
I have to agree,,my ride is bone stock for the moment and Ive actully laid off it cause it sounds sickly. Ive owner 930 turbos, M3s, 540s, 535s,WRXs,Grand national, vettes, FFRs, and well you get the point. Its perfect when cruising, like my wife should with it and 105k miles, however I will definatley do and exhaust and downpipe. Seems like all the mature folks who have agree it sounds "proper" not boy racer abnoxous. BTW a 2004 M3 sounds like nails being spit out the tail pipe and a 930 sounds broke till 3500rpm.