E90Post
 


European Auto Source
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > N55 FBO turbo whine



Reply
 
Thread Tools Search this Thread
      01-13-2014, 04:11 PM   #1
iuhutch
First Lieutenant
 
Drives: 2013 BMW 135i Msport
Join Date: May 2013
Location: Minneapolis, MN

Posts: 309
iTrader: (0)

N55 FBO turbo whine

Anyhow, purchased the car in April of 2013 as a CPO with 37k miles and I starting modding her as soon as I learned how special our engines really were. She's basically FBO minus exhaust (see part specific details in my footer) and has been FBO since August. Never really noticed the whining before August and lately I've noticed that the Turbo whining is more apparent. Did some quick research and found an ancient thread on bimmerforums containing controversial comments/opinions on if this meant that the turbo was going out. The OP also had N54.

I finally got around to getting the gopro in the car to record the whine noise my turbo has been making.

The Turbo still pulls hard and i'm peaking at 19psi and thus I do not feel it is a boost leak. This is not during low engine temps or low rpm whistle from the n54. Anyone else have a similar noise with n55? Car has 43k miles and has been FBO for 6 months ~7k




2011 e92 335xi - Sport|Nav|Premium|Winter|Convenient
JB 4 G5 | N55 ISO | BMS Intake | BMS DP | BMS Clutch Stop | BMS Cabin Filters | BMS CDV | AA FMIC | FF Adapter - 50% E85 | INPA coded | 19" Breyton GTS

Last edited by iuhutch; 01-13-2014 at 04:22 PM.
iuhutch is offline  
0
Reply With Quote
      01-13-2014, 04:34 PM   #2
evo335xi
First Lieutenant
 
Drives: 335
Join Date: Mar 2013
Location: Ct

Posts: 335
iTrader: (0)

Car pulls fine? How long has the whistle been and do you have an intercooler? A leak would make your turbo work harder for the designated boost, so it could be leaking from a hose/clamp etc. still
evo335xi is online now  
0
Reply With Quote
      01-13-2014, 04:41 PM   #3
iuhutch
First Lieutenant
 
Drives: 2013 BMW 135i Msport
Join Date: May 2013
Location: Minneapolis, MN

Posts: 309
iTrader: (0)

I do have an intercooler (aa). turbo feels to be pulling fine...and seems to meeting its target on the logs? that being said, i do not remember the turbo whining much before the intercooler install?...hmm

Anyway to test / trace this down?

Last edited by iuhutch; 01-13-2014 at 04:51 PM.
iuhutch is offline  
0
Reply With Quote
      01-13-2014, 05:02 PM   #4
BgonzoE90LCI
(o'')==O <(x.x)>
 
BgonzoE90LCI's Avatar
 
Drives: 2011 335I E90
Join Date: Jun 2013
Location: Las Vegas

Posts: 61
iTrader: (0)

Garage List
2011 BMW 335i  [0.00]
Maybe loose windshield trim allowing air into the car causing it to whistle? Just throwing possiblities out there. Can't watch the video from work comp.
BgonzoE90LCI is offline  
0
Reply With Quote
      01-13-2014, 05:10 PM   #5
iuhutch
First Lieutenant
 
Drives: 2013 BMW 135i Msport
Join Date: May 2013
Location: Minneapolis, MN

Posts: 309
iTrader: (0)

No, engine cowl removed running bmw cabin filters. Only whines under load and above 4k. Interesting thought on inter cooler piping, in intake side was a bitch but all clamps are on extremely tight
iuhutch is offline  
0
Reply With Quote
      01-13-2014, 06:29 PM   #6
evo335xi
First Lieutenant
 
Drives: 335
Join Date: Mar 2013
Location: Ct

Posts: 335
iTrader: (0)

I bet it's the intercooler piping/couplers.
evo335xi is online now  
0
Reply With Quote
      01-13-2014, 06:36 PM   #7
paradoxical3
Captain
 
Drives: BMW
Join Date: Mar 2012
Location: USA

Posts: 601
iTrader: (3)

Quote:
Originally Posted by iuhutch View Post
No, engine cowl removed running bmw cabin filters.
There you go. Put the cowl back on and see what happens.
paradoxical3 is offline  
0
Reply With Quote
      01-13-2014, 07:47 PM   #8
Dark_Knight_335
Came to the N55 Darkside
 
Dark_Knight_335's Avatar
 
Drives: 2011 335 E93 M-Sport
Join Date: May 2010
Location: NY/NJ

Posts: 9,958
iTrader: (26)

Mine whistles like a slide whistle in a circus- consider yourself fortunate.
Dark_Knight_335 is online now   United_States
0
Reply With Quote
      01-13-2014, 07:54 PM   #9
tc535i
Major
 
Drives: 2007 335i, 2001 330i, 1995 M3
Join Date: Sep 2013
Location: West Los Angeles

Posts: 1,003
iTrader: (1)

yeah, removing the cowl lets more noise in, that's probably what you're hearing
tc535i is offline  
0
Reply With Quote
      01-13-2014, 08:24 PM   #10
iuhutch
First Lieutenant
 
Drives: 2013 BMW 135i Msport
Join Date: May 2013
Location: Minneapolis, MN

Posts: 309
iTrader: (0)

I prefer running the BMS cowl. It's easier to hear engine audios, temp and weight. Buddy has same setup. Can hear his but not like mine but he also only has 24k...
iuhutch is offline  
0
Reply With Quote
      01-13-2014, 08:29 PM   #11
iuhutch
First Lieutenant
 
Drives: 2013 BMW 135i Msport
Join Date: May 2013
Location: Minneapolis, MN

Posts: 309
iTrader: (0)

Quote:
Originally Posted by evo335xi View Post
I bet it's the intercooler piping/couplers.
I think your onto something. Can I wait till it get warm out? Is this hurting the turbo?
iuhutch is offline  
0
Reply With Quote
      01-13-2014, 08:38 PM   #12
evo335xi
First Lieutenant
 
Drives: 335
Join Date: Mar 2013
Location: Ct

Posts: 335
iTrader: (0)

How much it is throwing off your air/fuel might be up to the size of the leak. Your turbo will be working harder no doubt, the question is how much. Look up whistling/siren noises after intercooler installs. They don't have to be Bmw specific either. I might be completely off but imo check it out.
evo335xi is online now  
0
Reply With Quote
      01-14-2014, 01:55 AM   #13
AlpineSwift
Colonel
 
AlpineSwift's Avatar
 
Drives: 2008 335Xi Coupé
Join Date: Feb 2010
Location: Castle Rock, CO

Posts: 2,090
iTrader: (2)

This would be easier to identify if you get some logs pulled. I'm going with the majority in saying its a leak in the system and if it is, logs will show AFR's out of the norm.
__________________
E92 '08 335Xi 6AT - Cobb AP V2, ar design DP's, Race Cats in the mids, Stock cans, VRSF CP w/Tial BOV, VRSF 7" FMIC, BMS DCI, BMS Cowl, H&R Coilovers, Renn Motorsport RS-51's, Alpina TCU Flash, Turner Boost Gauge, Fully Coded.
Tanya: The Build Thread
Dyno Sheets w/Current Mods
AlpineSwift is offline   United_States
0
Reply With Quote
      01-14-2014, 11:31 AM   #14
iuhutch
First Lieutenant
 
Drives: 2013 BMW 135i Msport
Join Date: May 2013
Location: Minneapolis, MN

Posts: 309
iTrader: (0)

Attached is a log and csv from FBO testing (2 days after AA intercooler install). I also had a video from this and it was making the noise during this log. I'm going to go back through my video's to determine roughly when it started becoming more apparent but from memory, it was when i started running e85 and obtaining higher boost.

I prefer to leave the cowl off and run the bms cabin filters. This way, i can listen to and diagnose the engine if needed, it keeps the temps a littler lower in the engine bay and its a weight saver.

I like the theory but based on all my logs, i've never really had an issue with AFR...
Attached Images
 
Attached Files
File Type: zip 130925_1239.zip (345.7 KB, 11 views)
iuhutch is offline  
0
Reply With Quote
      01-14-2014, 12:18 PM   #15
Bobby_Sardells
First Lieutenant
 
Bobby_Sardells's Avatar
 
Drives: 2011 335i XDrive Special Ed.
Join Date: Aug 2011
Location: Toronto, Ontario, Canada

Posts: 334
iTrader: (0)

Garage List
Quote:
Originally Posted by iuhutch View Post
I do have an intercooler (aa). turbo feels to be pulling fine...and seems to meeting its target on the logs? that being said, i do not remember the turbo whining much before the intercooler install?...hmm

Anyway to test / trace this down?
do you have an open style intake? After i installed my burger intake i heard all the whistles and whines from the turbo...didn't think it was a problem! I have heard an intercooler will make the whine even louder which I will soon be able to attest.
Bobby_Sardells is offline  
0
Reply With Quote
      01-14-2014, 12:33 PM   #16
iuhutch
First Lieutenant
 
Drives: 2013 BMW 135i Msport
Join Date: May 2013
Location: Minneapolis, MN

Posts: 309
iTrader: (0)

Quote:
Originally Posted by evo335xi View Post
How much it is throwing off your air/fuel might be up to the size of the leak. Your turbo will be working harder no doubt, the question is how much. Look up whistling/siren noises after intercooler installs. They don't have to be Bmw specific either. I might be completely off but imo check it out.
I did this and found a FAQ on Garretts website:

Q. What is/causes Shaft Play?
A. Shaft play is caused by the bearings in the center section of the turbo wearing out over time. When a bearing is worn, shaft play, a side to side wiggling motion of the shaft occurs. This in turn causes the shaft to scrape against the inside of the turbo and often produces a high-pitched whine or whizzing noise. This is a potentially serious condition that can lead to internal damage or complete failure of the turbine wheel or the turbo itself.


Unfortunately this sounds like my issue besides the fact that mine only whines during full WOT and not at low rpms like the old n54 whining issues...

Assuming there is nothing I can do about it? Is best bet to go back to stock and make an appt with bmw? I ruined the stock intercooler piping (cut the metal clamp and went into the plastic piping itself. I think besides that and with some work, I can get her back to stock). Oh, and should i take downpipe off too? I'd have to have the shop do that
iuhutch is offline  
0
Reply With Quote
      01-14-2014, 12:35 PM   #17
iuhutch
First Lieutenant
 
Drives: 2013 BMW 135i Msport
Join Date: May 2013
Location: Minneapolis, MN

Posts: 309
iTrader: (0)

Quote:
Originally Posted by Bobby_Sardells View Post
do you have an open style intake? After i installed my burger intake i heard all the whistles and whines from the turbo...didn't think it was a problem! I have heard an intercooler will make the whine even louder which I will soon be able to attest.
Yes, I am FBO. Buddy has the same car and very similar mods (same FMIC, intake, jb4, flex fuel, etc.). His whines but very faintly compared to mine which just screams as you can hear in the vid
iuhutch is offline  
0
Reply With Quote
      01-14-2014, 01:11 PM   #18
hetzle
First Lieutenant
 
Drives: E90 335i
Join Date: Dec 2011
Location: Los Altos, California

Posts: 326
iTrader: (0)

I've never heard a noise like that before, best of luck!
__________________
2011 335i sedan 6MT, JB4 w/FlexFuel wires, AA 4" DP, VRSF 7" FMIC, AA turbo-back exhaust, UUC DSSR+SSK, ER CP, BMS CDV, BMS OCC, Arkym CF trunk
hetzle is offline  
0
Reply With Quote
      01-14-2014, 01:57 PM   #19
Bobby_Sardells
First Lieutenant
 
Bobby_Sardells's Avatar
 
Drives: 2011 335i XDrive Special Ed.
Join Date: Aug 2011
Location: Toronto, Ontario, Canada

Posts: 334
iTrader: (0)

Garage List
Quote:
Originally Posted by iuhutch View Post
Yes, I am FBO. Buddy has the same car and very similar mods (same FMIC, intake, jb4, flex fuel, etc.). His whines but very faintly compared to mine which just screams as you can hear in the vid
Definitely something wrong if there is a difference. Please keep us posted on the problem / solution!
Bobby_Sardells is offline  
0
Reply With Quote
      01-14-2014, 07:20 PM   #20
Akleifg
Private First Class
 
Drives: 2011 335i
Join Date: Oct 2013
Location: Dallas, TX

Posts: 127
iTrader: (0)

Garage List
2011 BMW  [0.00]
A google search and... Deleted

Good luck!
__________________
2011 335i e90
Sport Suspension - Manual Tran - Sport Seats
PPK v2 - Cobb AP3 Tuner - Berk 4" Catless DP
Akleifg is offline  
0
Reply With Quote
      01-14-2014, 07:31 PM   #21
loesch
First Lieutenant
 
loesch's Avatar
 
Drives: 2011 BMW 135i M Sport
Join Date: Feb 2012
Location: State College, PA

Posts: 390
iTrader: (2)

Your log looks almost exactly the same as mine. Slightly higher PWM and slightly higher psi boost but you were also running more E85 so I don't know.
loesch is offline   United_States
0
Reply With Quote
      01-14-2014, 07:41 PM   #22
iuhutch
First Lieutenant
 
Drives: 2013 BMW 135i Msport
Join Date: May 2013
Location: Minneapolis, MN

Posts: 309
iTrader: (0)

Tried a few different maps on the way home.

1. Map 2 (14psi) and gave her a run. The whine was audible but not as distinct/loud as on map 5 running 18/19psi.

2. Map 1 (12psi) - whine barely audible and not until late in a 3rd gear pull.

3. Map 0 (stock map) - car actually still felt more peppy than what it was completely stock and no whine at max boost ~9psi. Not sure what this proves? Good that turbo sounded happy but bad that I wouldn't be able to reproduce this issue with all stock parts to have bmw investigate

I'm not sure what to do. I think I may go to map 2 for a bit so that it's not asking too much from the turbo. At the same time, this sucks bc I have all supporting mods for full boost yet I could run 14psi with many less parts. Maybe if the whine continues to get worse I can get it to reproduce at 9psi and have bmw look/replace turbo as I'm in warranty till 15'...
iuhutch is offline  
0
Reply With Quote
Reply

Bookmarks

Tags
fbo, n55, turbo whine

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 01:41 PM.




e90post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST