N54 Vacuum Lines

Connors N54-N55 · 03-14-2024, 05:22 PM

My bov has really bad compression surge. Guessing I have a vacuum/boost leak. I have read a lot of forums on about DIY’s for vacuum lines. Have seen a lot of diagrams but haven’t really found how to route to the rear turbo or where to go after the bov. If anyone could help that would be great, and also which lines for vacuum they use?

Clubfed11 · 03-16-2024, 05:08 PM

not sure how much of a help it is but check out https://www.realoem.com/bmw/enUS/select
and put in the last 7 of your VIN. click on engine then vacuum control.
Here is mine but its for a 2013 335is, probably the same:
https://www.realoem.com/bmw/enUS/sho...diagId=11_3975

It doesn't show exact routing but it should help you understand it a little better.

Hope that's of some help.

03-14-2024, 05:22 PM	#1
Connors N54-N55 Registered 0 Rep 2 Posts Drives: BMW 2008 & 2011 335i e93 Join Date: Mar 2024 Location: Ithaca NY iTrader: (0)	N54 Vacuum Lines My bov has really bad compression surge. Guessing I have a vacuum/boost leak. I have read a lot of forums on about DIY’s for vacuum lines. Have seen a lot of diagrams but haven’t really found how to route to the rear turbo or where to go after the bov. If anyone could help that would be great, and also which lines for vacuum they use? Last edited by Connors N54-N55; 03-14-2024 at 05:24 PM.. Reason: Didn’t explain why I need to replace my lines
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03-16-2024, 05:08 PM	#2
Clubfed11 New Member 5 Rep 8 Posts Drives: 2013 335is Join Date: Feb 2024 Location: Bay Area, CA iTrader: (0)	not sure how much of a help it is but check out https://www.realoem.com/bmw/enUS/select and put in the last 7 of your VIN. click on engine then vacuum control. Here is mine but its for a 2013 335is, probably the same: https://www.realoem.com/bmw/enUS/sho...diagId=11_3975 It doesn't show exact routing but it should help you understand it a little better. Hope that's of some help.
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