Just added the
Eisenmann Race axle back to my N55 mids and sounds friggin awesome..
Nice deep rumble and gurgle low in the rev range and screams
in the high revs..
Like driving a totally different car, with more torque down low..
Recommended break in on the pipes is about 700km, and then it will sound even better, which is hard to believe, as it sounds the money now..
Claimed 33% better flow over OEM axle back.
Also, it tucks up nice and deep and you cant even see it ( Only the 83mm tips ), where The OEM muffler stands out like an eye sore.
Will post a vid later on tomorrow..