Sorry i've read only abit, from
http://www.1addicts.com/forums/showthread.php?t=657738
so I've got a Dec 07 e91 335i, so i assume small bolted diff.
its 3.46 however. as i understand MF-TRS-05E46A is the model people are getting? but this is a 3.15.
Sorry for my lack of mechanical knowledge, but what would changing the final ratio do?
Is there a 3.46 avail for small bolted?