If running a Tial BOV on your N54 instead of the TurboSmart Raceport you want to run the black spring. This will provide you with the most complete vent, and eliminate any chance for flutter/surge.
Adapter fitting that is required to convert your N54 to external PCV if you want to keep your crankcase under vacuum at idle, and anytime you have a vacuum condition in your intake manifold.
This kit comes with 1 set (both turbos) of Stainless Steel wear matched bushing, and flapper assembly, Wastegate arm, rod end, and Stainless steel 8mm C clip.
A plug and play BOV option for your N54. This kit comes with everything you will need to replace your undersized factory DV with a high quality Turbosmart Race port.
NGK 95706 Spark plug set required for running 100% e85, and high boost on many BMW application including N54, N55, S55, etc.Plugs can be bought as a set of 6. You can add pre-gapping for an additional $25
VTT CNC Billet check valve that can be used for a variety of uses including a vacuum/boost check valve when removing the stock PCV system, and still wanting to run vacuum to the crankcase. Rated at over 100 psi, with a cracking psi of .25psi.