Selling a lightly used aFe Magnum Force Stage 2 Pro Dry S Air Intake for the N54. This has been custom sealed similar to the DIY found in Part II of this thread:
http://www.e90post.com/forums/showpo...00&postcount=1
When sealed like this the box has a proven power gains of 9 whp and 12 wtq over stock airbox with drop-in filter, which much earlier power delivery. (Part III of the thread above shows dyno results).
$350 shipped in the U.S.