Good news for all of us 335i sedan owners -- Ultimate Racing has released a new exhaust for the E90 335i. To this point, the coupe has been getting most of the attention, so it's nice to see a tuner step up and release an exhaust for the sedan.

I have ordered one and look forward to reporting my impressions once it's installed! Info can be found here:
http://www.ultimate-racing.com/Produ...-Catback.shtml
10-11 whp gains are claimed at various points along the power curve (w/no other mods). Also, I think a coupe version is in the works as well.
BTW, this company has a good rep in the Subaru tuning community - they may be new to BMW, but I've heard that these guys are pros. I think that's evident from the welds on this exhaust.