E90Post
 


Bimmer Retrofit
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Waste gate problem?



Reply
 
Thread Tools Search this Thread
      10-02-2013, 04:05 PM   #1
Tiny Chainsaw
Second Lieutenant
 
Tiny Chainsaw's Avatar
 
Drives: 135i
Join Date: Jul 2013
Location: United States

Posts: 299
iTrader: (-1)

Waste gate problem?

Recently, my waste gate has been acting up. I was on the freeway and I lost a shitload of power and my exhaust was a lot noisier than usual. All signs of my waste gate not being able to close..

But I took my car to the dealership today, I haven't driven the car for two days either and it is much better and the foreman technician said that it felt fine to him. So I just took it back home and drove it for the first time in awhile. But now I noticed that I have a bunch of throttle lag and the car just feels less responsive and slower altogether. But still much better than before when I was getting no boost.

I feel that the car can't hold boost as well as before... Could this be due to a waste gate problem still?? Or is it something else? I'll probably drive it around for a week and bring it back in the next. The thing is that no CEL came up so I have no proof to show the dealership except my intuition.
Tiny Chainsaw is offline  
0
Reply With Quote
      10-02-2013, 04:19 PM   #2
JStang
N54 ADDICT
 
JStang's Avatar
 
Drives: FBO E92 335i
Join Date: Dec 2010
Location: St. Petersburg, FL

Posts: 2,895
iTrader: (6)

Quote:
Originally Posted by Tiny Chainsaw View Post
Recently, my waste gate has been acting up. I was on the freeway and I lost a shitload of power and my exhaust was a lot noisier than usual. All signs of my waste gate not being able to close..

But I took my car to the dealership today, I haven't driven the car for two days either and it is much better and the foreman technician said that it felt fine to him. So I just took it back home and drove it for the first time in awhile. But now I noticed that I have a bunch of throttle lag and the car just feels less responsive and slower altogether. But still much better than before when I was getting no boost.

I feel that the car can't hold boost as well as before... Could this be due to a waste gate problem still?? Or is it something else? I'll probably drive it around for a week and bring it back in the next. The thing is that no CEL came up so I have no proof to show the dealership except my intuition.
Do you have a tune? If you do and assuming that you uninstalled it prior to taking it to the dealership, you need to give it time to adapt.
__________________

PTF Tuned Cobb Stage 2+ | H&R/Koni Sport | BBS CH-R
JStang is offline  
0
Reply With Quote
      10-02-2013, 04:49 PM   #3
Tiny Chainsaw
Second Lieutenant
 
Tiny Chainsaw's Avatar
 
Drives: 135i
Join Date: Jul 2013
Location: United States

Posts: 299
iTrader: (-1)

No tune, bone stock except for berk midpipes and axleback
Tiny Chainsaw is offline  
0
Reply With Quote
      10-02-2013, 05:09 PM   #4
CHECKERED
ex deus machina
 
CHECKERED's Avatar
 
Drives: 335i E92, 05 Audi S4
Join Date: Oct 2012
Location: a Treacherous Canyon Road in SoCal

Posts: 387
iTrader: (5)

Garage List
2005 Audi S4  [0.00]
Quote:
Originally Posted by Tiny Chainsaw View Post
No tune, bone stock except for berk midpipes and axleback
any reason for no tune?
__________________
Garage Queen: 2005 Audi S4 4.2L V8, Vortech Supercharger, Vented CF Hood, PSS9 Coilovers, Sway-bars, RS4 brakes, Fast Intentions - Cat-less Downpipes & Full Exhaust, 505AWTQ
Daily Driver: E92 335i N54: JB4 G5 ISO28 w/BMS Flash, quaife LSD, BMS Meth, AA sport IC, BMS Charge Pipe, BMS OCC, Euro Light Switch, M-Sport Kit; 12.1@117mph (stock intake stock exhaust, 225ís RFT)
CHECKERED is offline   United_States
0
Reply With Quote
      10-02-2013, 05:12 PM   #5
Tiny Chainsaw
Second Lieutenant
 
Tiny Chainsaw's Avatar
 
Drives: 135i
Join Date: Jul 2013
Location: United States

Posts: 299
iTrader: (-1)

Quote:
Originally Posted by CHECKERED
Quote:
Originally Posted by Tiny Chainsaw View Post
No tune, bone stock except for berk midpipes and axleback
any reason for no tune?
No reason besides I just got the car last month. I'll put on tune after I get a better fmic and chargepipe and ditch the RFTs.
Tiny Chainsaw is offline  
0
Reply With Quote
      10-02-2013, 06:48 PM   #6
Nigelo
Lieutenant
 
Drives: E92 335i se
Join Date: Aug 2011
Location: Northern Ireland

Posts: 528
iTrader: (1)

Vacuum leak? Might just be the start of one - took me a week of symptoms like yours before I got a full underboost code. Had a split vacuum tank, and a couple of collapsed/blocked pipes.
Nigelo is offline  
0
Reply With Quote
      10-02-2013, 07:12 PM   #7
CustomColours
Banned
 
Drives: 335i SE
Join Date: Apr 2012
Location: Hertfordshire

Posts: 792
iTrader: (0)

Could it be that they updated your software to 29.9 or higher thus getting lag?
CustomColours is offline  
0
Reply With Quote
      10-02-2013, 07:40 PM   #8
Tiny Chainsaw
Second Lieutenant
 
Tiny Chainsaw's Avatar
 
Drives: 135i
Join Date: Jul 2013
Location: United States

Posts: 299
iTrader: (-1)

Quote:
Originally Posted by CustomColours View Post
Could it be that they updated your software to 29.9 or higher thus getting lag?
They didn't touch my car after the waste gate problem, I just let the foreman drive the car.

Now I've been noticing that I get throttle lag ]:

When I first got it this was not a problem at all, but after the lost in power/increase in exhaust noise that went away, throttle lag came into play... could the DME somehow recognized that I was getting 0 boost and reset itself?

I can tell that the throttle is much less responsive because when I downshift I have to push much harder on the the throttle for it to blip up, and also in higher gears with low revs, I have lag (gear 4, going 40-50 mph) I use to be able to pass up cars like nothing by just barely tapping the throttle, but now I can go full throttle and the car won't move until seconds later.. -__- this is so frustrating because the car was so perfect just a couple days ago.
Tiny Chainsaw is offline  
0
Reply With Quote
      10-02-2013, 08:24 PM   #9
BMWM.D.
Stupid Idiot
 
BMWM.D.'s Avatar
 
Drives: E90 335i & C6 Grand Sport
Join Date: May 2009
Location: Santa Barbara

Posts: 686
iTrader: (1)

Quote:
Originally Posted by Tiny Chainsaw View Post
They didn't touch my car after the waste gate problem, I just let the foreman drive the car.

Now I've been noticing that I get throttle lag ]:

When I first got it this was not a problem at all, but after the lost in power/increase in exhaust noise that went away, throttle lag came into play... could the DME somehow recognized that I was getting 0 boost and reset itself?

I can tell that the throttle is much less responsive because when I downshift I have to push much harder on the the throttle for it to blip up, and also in higher gears with low revs, I have lag (gear 4, going 40-50 mph) I use to be able to pass up cars like nothing by just barely tapping the throttle, but now I can go full throttle and the car won't move until seconds later.. -__- this is so frustrating because the car was so perfect just a couple days ago.
Could be one of the wastegates intermittently binding or an issue with the vacuum control system as others mentioned. All pretty easy stuff the test if you have a hand vacuum pump and gauge.
__________________
BMWM.D. is offline  
0
Reply With Quote
      10-02-2013, 08:56 PM   #10
N54 Curt
New Member
 
Drives: 2008 335xi
Join Date: Aug 2013
Location: Aurora/Lawrenceburg Indiana

Posts: 5
iTrader: (0)

I had the same exact issue two weeks ago. Took my car in because I noticed the issue and could get it to throw a code when revving above around 4000 rpm.

They first thought it was just a vacuum leak which they found right by the waste gate. They fixed the vacuum leak and the car felt much more responsive already, however I test the car by going above 4000 rpm just to make sure the issue is resolved and sure enough it throws the code again and loses power.

I take the car back and get both turbos replaced with costs covered because of the SI B01 02 12 warranty. I call today to check on the car, my SA tells me that I now need my waste gate solenoid valve actuator replaced and they car should be ready in the next two days.

Long story short I am not very happy with all the issues and hope that this actuator valve is the last piece of the puzzle to get my car back. I've been without it for two weeks.
N54 Curt is offline  
0
Reply With Quote
      10-02-2013, 09:32 PM   #11
Tiny Chainsaw
Second Lieutenant
 
Tiny Chainsaw's Avatar
 
Drives: 135i
Join Date: Jul 2013
Location: United States

Posts: 299
iTrader: (-1)

Quote:
Originally Posted by N54 Curt
I had the same exact issue two weeks ago. Took my car in because I noticed the issue and could get it to throw a code when revving above around 4000 rpm.

They first thought it was just a vacuum leak which they found right by the waste gate. They fixed the vacuum leak and the car felt much more responsive already, however I test the car by going above 4000 rpm just to make sure the issue is resolved and sure enough it throws the code again and loses power.

I take the car back and get both turbos replaced with costs covered because of the SI B01 02 12 warranty. I call today to check on the car, my SA tells me that I now need my waste gate solenoid valve actuator replaced and they car should be ready in the next two days.

Long story short I am not very happy with all the issues and hope that this actuator valve is the last piece of the puzzle to get my car back. I've been without it for two weeks.
I would be glad to get new turbos!! Especially if they are updated versions, but the thing is my car didn't throw codes. It happened once and now it doesn't seem to happen anymore. Everything is normal now except for the lag, which I hope will go away too. Sucks that the DME isn't throwing any codes so I am clueless to what happened. Car runs normal in 1st and 2nd gear, there is slight lag in 3rd and major lag in all other gears. Car only has 17k miles too 02/09 build.
Tiny Chainsaw is offline  
0
Reply With Quote
      10-02-2013, 09:51 PM   #12
N54 Curt
New Member
 
Drives: 2008 335xi
Join Date: Aug 2013
Location: Aurora/Lawrenceburg Indiana

Posts: 5
iTrader: (0)

Quote:
Originally Posted by Tiny Chainsaw View Post
I would be glad to get new turbos!! Especially if they are updated versions, but the thing is my car didn't throw codes. It happened once and now it doesn't seem to happen anymore. Everything is normal now except for the lag, which I hope will go away too. Sucks that the DME isn't throwing any codes so I am clueless to what happened. Car runs normal in 1st and 2nd gear, there is slight lag in 3rd and major lag in all other gears. Car only has 17k miles too 02/09 build.
That's odd, mine was lagging in the lower gears horribly but performed best at highway speeds. Car has just been racking my brain for the last week and is frustrating not knowing what will fix it, hope something comes about for yours, odd that it is fine in the lower gears when the turbos technically should take longer to spool up
N54 Curt is offline  
0
Reply With Quote
      10-02-2013, 10:21 PM   #13
Tiny Chainsaw
Second Lieutenant
 
Tiny Chainsaw's Avatar
 
Drives: 135i
Join Date: Jul 2013
Location: United States

Posts: 299
iTrader: (-1)

Quote:
Originally Posted by N54 Curt View Post
That's odd, mine was lagging in the lower gears horribly but performed best at highway speeds. Car has just been racking my brain for the last week and is frustrating not knowing what will fix it, hope something comes about for yours, odd that it is fine in the lower gears when the turbos technically should take longer to spool up
Yeah I don't know, if anything the problem should arise again and then I'll bring it back to the dealership.

For now I'm just gonna deal with it
Tiny Chainsaw is offline  
0
Reply With Quote
Reply

Bookmarks

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 12:46 AM.




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