Do to heavy demand prices have been released before bimmerfest
E90: SR Catalytic Converter Back Bolt On Pipes.
These pipes, combined with the muffler, comprise a full
cat-back exhaust system for the E90. -$787
Eisenmann Race Performance 4x70mm- $1378.76
http://www.eisenhaus.com/ehprice.php...36&Submit.y=14