This is from a Japanese company called Auto EXE. Supposed to be of really high quality, but it's not a straight-through muffler. $689 is a little steep, too. Don't know what size it is. I emailed the guy but he never answered that question.

This same company that's selling this cat-back (corksport) is in the process of developing their own cat-back exhaust for the 3, as well as an intake and some brake lines and a strut bar. Their cat-back is scheduled to come out December 6th. It WILL have a straight-through muffler, unlike the Auto EXE one. AND it's supposed to only cost $389 or so. THAT'S what I'm talking about!!! With our displacement, a good intake/header/exhaust will probably amount to 25 horsepower or so. I can't wait for somebody to come out with a header!!!

http://www.corksport.com/main.php3?p...3Fcat%3D293618