I don’t see or remember any original vacuum lines where i should. In this article, i’ll discuss charge pipe and blow off valve options so you can decide what is best for your n54 As i begin to increase the boost in my 335i, the first thing i want to address is the charge pipe
STETT CHARGE PIPE & SYNAPSE BOV - BMW 335I - YouTube
The stock plastic charge pipe is prone to cracking and breaking with increased pressure
Check the engine bay and underbody tray
Pulling the intake manifold will likely more than double your install time, but if you do, you'll probably want to make sure you have a replacement set of. If the charge pipe is actually cracked (which it likely is, common issue on n54 and n55's), replace it with an aftermarket aluminum charge pipe from vrsf or bms. Wipe any oil and dirt from the air temperature sensor, then install it into the new charge pipe and secure it with the two mounting screws and lock washers supplied with the kit. I have heard that you can buy an adapter plate to block off the dv and then buy a charge pipe with a bov flange to install one, but i wouldn't suggest doing it
It is not worth it at all and. Once i got home, did a quick search here and saw someone had a blown charge pipe with p00bd so i popped the hood and there it was. You need to order the proper charge pipe for a bov and then get plugs for your dv’s The plugs they send with the kit suck, you’re better off going to.