I've been grappling with exhaust as the first update to my M5. I've followed the Magnaflow discussions with interest, and like the Remus look. I had an AA GENIII system on my last M3 that I loved, but see they do nothing for the e39 M5. So I keep coming back to a basic list of wants:
1.) Staggered tips like the OEM if possible
2.) Slightly oversized tips (3" ish, not 3.5)
3.) Black cannister if possible
4.) Nice enhanced sound without being overly loud or glass-packish and no drone if possible.
Dinan seems to fill these needs based on what I read and remains an OEM/authorized tuner if that is worth a bit more than a straight aftermarket exhaust. Knowing none of the cat back systems do anything in terms of real performance gains, aesthetics and sound are all thats left.
I have yet to hear an aftermarket exhaust on an M5 in real life and was hoping someone in Austin may have one I could lean an ear to.
If you do, please let me know - I'd sure apreciate a listen.
Thanks in advance.