I have had 7 BMWs previously, and most of the time, I just had to change the exhausts and intakes to free up the air flow. So far I've had 95 E36 M3 US Version (with Super Sprint Exhaust), 96 E38 740il (with Ac-schnitzer: I did not like it at all), 97 E39 540i (with another Super Sprint), 99 E39 M5 (with Hamann exhausts). I had been satisfied or at least I thought I had been satisfied wih their sound and performance results... up until I got this exhaust from eisenmann.
I currently own 2001 E46 M3 Conv and 2002 E53 X5 3.0i Sport and was looking for good exhaust systems. One of my friend who has Z8 and 850csi had eisenmann exhausts on his car, so I gave it a try..first installed eisnemann exhausts on my M3 and I just had to get another set for my X5. I am in heaven~!. These mufflers really do sing~! and unlike supersprint, hamann or ac-schnitzer, I really felt the power difference FAR BETTER!. wow.. I could not believe its sound and performace! I have to give this exhaust system a big 5 star recommendation. If you are thinking about changing your exhaust, man~ go with eisenmann.
I ordered mine at www.eisenhaus.com, it was pretty good website. I called several places before I purchase eisenmann exhausts from eisenhaus, but looked like they had the best prices and offered some other unique features..Thanks to my friend Shawn and eisenhaus..
I am in Heaven~