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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > slow boost building!



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      06-28-2015, 09:08 PM   #23
007_e350
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Also I was thinking my waste gates aren't calibrated, 70k on them I don't blame em, so is there an easy way to do the front one ? I can get to the rear one, put a vacuum syringe to 6mmHG and make sure it's closes completely (that's what I read on n54tech)

ramadan mubarik bros
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      06-28-2015, 09:17 PM   #24
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Quote:
Originally Posted by 007_e350 View Post
Also I was thinking my waste gates aren't calibrated, 70k on them I don't blame em, so is there an easy way to do the front one ? I can get to the rear one, put a vacuum syringe to 6mmHG and make sure it's closes completely (that's what I read on n54tech)

ramadan mubarik bros
You can easily get the rear one but no way to get the front unless you pull the turbos off or the whole engine.
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      06-28-2015, 09:55 PM   #25
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Woah this is why I'm getting a custom tune. I don't gotta worry about shit lol
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      06-29-2015, 04:26 AM   #26
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Quote:
Originally Posted by E90 M335i View Post
Looking at your FF wastegate adaptation .. it seems that there's a good chance you have a boost leak somewhere. 1st of all i'd take a look at the charge pipe around the throttle body and closer to the mounting tab that's where they usually crack but give her a good check. 2nd, check all your vacuum lines. The last thing would be your boost solenoids, if you can check them somehow, great, if not just buy one and replace the old one at a time, they're not very expensive.

And Ramadan Mubarak Bros
i will look for leaks today, and i already bought new boost solenoids and replaced them with the old ones nothing really changed. im going to do logs to day just to make suer..
Ramadan Mubarak to you too bro!

Last edited by Mohammed T.B; 06-29-2015 at 04:27 PM..
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      06-29-2015, 10:46 PM   #27
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Originally Posted by Mohammed T.B View Post
i will look for leaks today, and i already bought new boost solenoids and replaced them with the old ones nothing really changed. im going to do logs to day just to make suer..
Ramadan Mubarak to you too bro!
If u don't wanna do a boost leak test, just runthe eengineaat idle and start spraying carb cleaner on the valve cover sides aaround the block, if rpm increases it's sucking in air ... my boost leak was at a very weird place on the valve cover, I had a broken bolt that caused leak from
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      06-30-2015, 02:30 AM   #28
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Quote:
Originally Posted by 007_e350 View Post
If u don't wanna do a boost leak test, just runthe eengineaat idle and start spraying carb cleaner on the valve cover sides aaround the block, if rpm increases it's sucking in air ... my boost leak was at a very weird place on the valve cover, I had a broken bolt that caused leak from
i will give it a try today, is the rpm increasing will noticeable?
and i think one of the Diverter Valves is not working right, is there any idea to bypass one of them?
example: unplug one side and use 1" plugs and use one vacuum line to the another side instead of the T? or its not good for the car?
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      07-02-2015, 12:06 AM   #29
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update:

when i was doing the leak test i got a big leaking coming from behind the engine, after doing after doing some research i think the leaking is from the turbo inlet pipe:


any suggestions how to fix it?
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      07-02-2015, 12:41 AM   #30
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Vargas makes a rear inlet bracket you can purchase, it will hold the inlet on the rear turbo. It doesn't come with a bracket from the factory.
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thanks to MGallop
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      07-02-2015, 01:33 AM   #31
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Vargas makes a rear inlet bracket you can purchase, it will hold the inlet on the rear turbo. It doesn't come with a bracket from the factory.
thanks
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      07-02-2015, 01:46 AM   #32
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thanks
Or this http://www.e90post.com/forums/showthread.php?t=963722
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      07-02-2015, 03:05 AM   #33
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That has nothing to do with a boost leak even if it is leaking. That just means you're taking in a little unfiltered air. That's not part of the pressurized system
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      07-02-2015, 03:59 AM   #34
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Originally Posted by HitHunter View Post
THIS IS WAY CHEAPER, I'll give it a try.

thanks a lot
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      07-02-2015, 04:14 AM   #35
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Quote:
Originally Posted by prelude2perfect View Post
That has nothing to do with a boost leak even if it is leaking. That just means you're taking in a little unfiltered air. That's not part of the pressurized system
I'm trying all the solutions i can do before going to the dealership
- no leaks
- no codes
- no misfire
- i got new boost solenoids
- cleaned VANOS Solenoid
- seafoam



now im waiting for a new cp with bov

if you have any suggestions please let me know
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      07-03-2015, 12:53 PM   #36
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Quote:
Originally Posted by Mohammed T.B View Post
update:

when i was doing the leak test i got a big leaking coming from behind the engine, after doing after doing some research i think the leaking is from the turbo inlet pipe:


any suggestions how to fix it?
I put an Oring on mine, still its not supposed to be compressed under pressure, thats intake, best is to pressure from before FMIC (passenger side)
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