E90Post
 


TNT Racewerks
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Procede logs - fuel trims maxed - please help



Reply
 
Thread Tools Search this Thread
      11-20-2012, 01:23 AM   #1
DallasBoosted
Captain
 
DallasBoosted's Avatar
 
Drives: '08 E92 335i
Join Date: Apr 2012
Location: Dallas

Posts: 864
iTrader: (3)

Garage List
2008 BMW 335i  [5.00]
Procede logs - fuel trims maxed - please help

08 E92 335i, mods are, Vishnu DCI, Procede Rev 2.5 9_10 maps stage 3, VRSF exhaust/DP's, VRSF 7" FMIC. Stett stg 2 oil cooler.

Even running only 15psi, my fuel trims are maxed throughout the midrange, car runs "okay" sometimes, other times its misfire city.

At 11psi, fuel trims touch max.

OL fuel is set at 100%. Have reloaded the map several times and reconnected procede to make sure the OL fuel setting is "active".

Logs below and screenshot of map settings.

Am not getting any codes other than misfire codes and 2C7F and 2C7E, lambda trimming control codes. Assume these have to do with the fuel trims being maxed.
Attached Images
   
DallasBoosted is offline  
0
Reply With Quote
      11-20-2012, 09:42 AM   #2
BigBoosting
First Lieutenant
 
Drives: 09' M3 6MT
Join Date: Aug 2012
Location: Savannah

Posts: 349
iTrader: (2)

I'm in the same boat. The 9-10 stage 3 map maxes my fuel trims, I don't have the intercooler or DP's just DCI's.

From what I have seen, some DME's have a larger window for fuel trims than others. In my case and most likely yours we got the low end of that range.
BigBoosting is offline  
0
Reply With Quote
      11-20-2012, 09:43 AM   #3
DallasBoosted
Captain
 
DallasBoosted's Avatar
 
Drives: '08 E92 335i
Join Date: Apr 2012
Location: Dallas

Posts: 864
iTrader: (3)

Garage List
2008 BMW 335i  [5.00]
Quote:
Originally Posted by BigBoosting View Post
I'm in the same boat. The 9-10 stage 3 map maxes my fuel trims, I don't have the intercooler or DP's just DCI's.

From what I have seen, some DME's have a larger window for fuel trims than others. In my case and most likely yours we got the low end of that range.
Do you happen to have the 4_23 maps so I can put it back? I didn't have this problem prior to updating (although I did my FBO mods at the same time).
DallasBoosted is offline  
0
Reply With Quote
      11-20-2012, 10:01 AM   #4
GeorgiaTech335coupe
Lieutenant Colonel
 
Drives: Black BMW 335i coupe
Join Date: Mar 2007
Location: USA

Posts: 1,884
iTrader: (0)

From my experience, the car would act funny if I had my OL settings above 95%. I'd try lowering it a little and see what happens. Something is going awry, you should have enough fuel. I had enough fuel to run 18+ psi on e85/93, 19+ psi on 93 FBO+meth.
__________________
Legal Disclaimer: Anything I or anyone else says about my vehicle on this website(e90post.com or any affiliated or nonaffiliated sites), pertaining to modifications, is only to gain acceptance from my/our peers, and does not actually represent anything actually existing on my car, and thus, cannot be held against me in any issues, i.e. warranty claims, that may arise.
GeorgiaTech335coupe is offline  
0
Reply With Quote
      11-20-2012, 10:19 AM   #5
3-Serious
Lieutenant
 
Drives: AP e92 335i
Join Date: Dec 2008
Location: New york

Posts: 456
iTrader: (1)

I had the same problem for about a year! It drove me nuts.
__________________
Cobb JR Tune, HFS-4, DCI, AMS Intercooler, Vishnu CP, Forge DV's, AR DP's, RPI exhaust, AR OCC, BMW STS, Spec stage 3+ clutch, CDV delete, H&R Coil overs, Quaife LSD, DefiV Lock down kit, WOTbox.
3-Serious is offline   United_States
0
Reply With Quote
      11-20-2012, 10:27 AM   #6
DallasBoosted
Captain
 
DallasBoosted's Avatar
 
Drives: '08 E92 335i
Join Date: Apr 2012
Location: Dallas

Posts: 864
iTrader: (3)

Garage List
2008 BMW 335i  [5.00]
Quote:
Originally Posted by nickkg37s View Post
I had the same problem for about a year! It drove me nuts.
What did you do to fix it?
DallasBoosted is offline  
0
Reply With Quote
      11-20-2012, 10:36 AM   #7
themyst
Major General
 
themyst's Avatar
 
Drives: E90 335i LCI
Join Date: Feb 2009
Location: NYC

Posts: 6,602
iTrader: (8)

Send a message via AIM to themyst
Quote:
Originally Posted by DallasBoosted View Post
What did you do to fix it?
See his sig.
__________________
E90 LCI N54 6AT
themyst is offline   South Korea
0
Reply With Quote
      11-20-2012, 10:37 AM   #8
3-Serious
Lieutenant
 
Drives: AP e92 335i
Join Date: Dec 2008
Location: New york

Posts: 456
iTrader: (1)

Quote:
Originally Posted by themyst View Post
See his sig.
Exactly.
__________________
Cobb JR Tune, HFS-4, DCI, AMS Intercooler, Vishnu CP, Forge DV's, AR DP's, RPI exhaust, AR OCC, BMW STS, Spec stage 3+ clutch, CDV delete, H&R Coil overs, Quaife LSD, DefiV Lock down kit, WOTbox.
3-Serious is offline   United_States
0
Reply With Quote
      11-20-2012, 10:37 AM   #9
themyst
Major General
 
themyst's Avatar
 
Drives: E90 335i LCI
Join Date: Feb 2009
Location: NYC

Posts: 6,602
iTrader: (8)

Send a message via AIM to themyst
Guys, you're going to have to get a Procede flash or a Cobb AP if you want to resolve your fueling issues it seems. Sucks, but what can you do.
__________________
E90 LCI N54 6AT
themyst is offline   South Korea
0
Reply With Quote
      11-20-2012, 10:45 AM   #10
BigBoosting
First Lieutenant
 
Drives: 09' M3 6MT
Join Date: Aug 2012
Location: Savannah

Posts: 349
iTrader: (2)

I sent off my DME yesterday for the Procede flash.
BigBoosting is offline  
0
Reply With Quote
      11-20-2012, 10:56 AM   #11
DallasBoosted
Captain
 
DallasBoosted's Avatar
 
Drives: '08 E92 335i
Join Date: Apr 2012
Location: Dallas

Posts: 864
iTrader: (3)

Garage List
2008 BMW 335i  [5.00]
Will call later today and see about the procede flash I guess.. its what, $95?
DallasBoosted is offline  
0
Reply With Quote
      11-20-2012, 11:01 AM   #12
DallasBoosted
Captain
 
DallasBoosted's Avatar
 
Drives: '08 E92 335i
Join Date: Apr 2012
Location: Dallas

Posts: 864
iTrader: (3)

Garage List
2008 BMW 335i  [5.00]
Quote:
Originally Posted by GeorgiaTech335coupe View Post
From my experience, the car would act funny if I had my OL settings above 95%. I'd try lowering it a little and see what happens. Something is going awry, you should have enough fuel. I had enough fuel to run 18+ psi on e85/93, 19+ psi on 93 FBO+meth.
I will go try to lower the OL fueling to 95 and see. I raised in increments of 10 from 75 though, and each increment made it come off of max sooner (up to 100 of course) but didn't fix the issue. I know I tried 95 at one point.

It doesn't take long to try it again though.
DallasBoosted is offline  
0
Reply With Quote
      11-20-2012, 11:03 AM   #13
Wedge1967
Banned
 
Drives: '07 e92 AT Sport Montego Blue
Join Date: Sep 2011
Location: Portland, OR

Posts: 2,172
iTrader: (3)

You can try to increase your values within the OL table. Look at your load and RPM range where the trims max and change the table values within those ranges. Increase them by 5 and see if that brings your trims back in line. Leave your global at 100% so the table change have a direct impact on the trims when logging. Hopefully that will help, otherwise you have two choices. COBB or Vishnu Flash.
Wedge1967 is offline   United_States
0
Reply With Quote
      11-20-2012, 11:13 AM   #14
DallasBoosted
Captain
 
DallasBoosted's Avatar
 
Drives: '08 E92 335i
Join Date: Apr 2012
Location: Dallas

Posts: 864
iTrader: (3)

Garage List
2008 BMW 335i  [5.00]
Quote:
Originally Posted by Wedge1967 View Post
You can try to increase your values within the OL table. Look at your load and RPM range where the trims max and change the table values within those ranges. Increase them by 5 and see if that brings your trims back in line. Leave your global at 100% so the table change have a direct impact on the trims when logging. Hopefully that will help, otherwise you have two choices. COBB or Vishnu Flash.
So you're talking about these numbers, right?

Would I just increase every number below 5500 rpm on the 120 and over kPa ranges?
Attached Images
 
DallasBoosted is offline  
0
Reply With Quote
      11-20-2012, 11:28 AM   #15
BigBoosting
First Lieutenant
 
Drives: 09' M3 6MT
Join Date: Aug 2012
Location: Savannah

Posts: 349
iTrader: (2)

Shiv suggested that in another thread, but also I believe he said if you change them more than 5-10 pts you will get some fuel pressure codes. Its a bandaid at best I think. The flash is about $100 and will fix all fueling issues, so for me it was the best choice.
BigBoosting is offline  
0
Reply With Quote
      11-20-2012, 11:28 AM   #16
3-Serious
Lieutenant
 
Drives: AP e92 335i
Join Date: Dec 2008
Location: New york

Posts: 456
iTrader: (1)

Quote:
Originally Posted by DallasBoosted View Post
So you're talking about these numbers, right?

Would I just increase every number below 5500 rpm on the 120 and over kPa ranges?
If you want to keep the procede send out for the flash. I went through a so many different maps and adjustments with shiv and got no where. Even had custom maps from Shiv himself made up. At the time he was telling me it was hardware related and he couldn't help. Until he finally told me I would have to send my DME in to be flashed. That's when I decided to switch to Cobb. Good luck OP! And by the way from what I've seen the flash he does defiantly helps.
__________________
Cobb JR Tune, HFS-4, DCI, AMS Intercooler, Vishnu CP, Forge DV's, AR DP's, RPI exhaust, AR OCC, BMW STS, Spec stage 3+ clutch, CDV delete, H&R Coil overs, Quaife LSD, DefiV Lock down kit, WOTbox.
3-Serious is offline   United_States
0
Reply With Quote
      11-20-2012, 12:58 PM   #17
secretsquirrel
Colonel
 
secretsquirrel's Avatar
 
Drives: 335i nFifty4LiFe
Join Date: Dec 2010
Location: land of the squirrel

Posts: 2,082
iTrader: (2)

For you to be running into fueling issues at 11psi is really odd. For reference, I don't run into fueling issues until about 17.5 or so using the same maps as you. Of course, every car is different, but something is up. Just to be clear, you're not running any mixture of e85 correct?
secretsquirrel is offline  
0
Reply With Quote
      11-20-2012, 01:02 PM   #18
tmaung
CCA Member#: 439255
 
Drives: E36 M3, F80 M3
Join Date: Jun 2009
Location: Northern VA

Posts: 467
iTrader: (8)

Garage List
2011 BMW 335is  [0.00]
Quote:
Originally Posted by BigBoosting View Post
I'm in the same boat. The 9-10 stage 3 map maxes my fuel trims, I don't have the intercooler or DP's just DCI's.

From what I have seen, some DME's have a larger window for fuel trims than others. In my case and most likely yours we got the low end of that range.
Why are you running Stage 3 without supporting mods?
__________________
On Order: 2015 F80 M3
Current: 1997 E36 M3
Past: 2011 E92 M3, 2011 E92 335is, 2008 E90 M3, 2007 E92 335i, 1995 E36 M3
tmaung is offline   United_States
0
Reply With Quote
      11-20-2012, 01:13 PM   #19
DallasBoosted
Captain
 
DallasBoosted's Avatar
 
Drives: '08 E92 335i
Join Date: Apr 2012
Location: Dallas

Posts: 864
iTrader: (3)

Garage List
2008 BMW 335i  [5.00]
Quote:
Originally Posted by secretsquirrel View Post
For you to be running into fueling issues at 11psi is really odd. For reference, I don't run into fueling issues until about 17.5 or so using the same maps as you. Of course, every car is different, but something is up. Just to be clear, you're not running any mixture of e85 correct?
Straight Texas 93 octane.
DallasBoosted is offline  
0
Reply With Quote
      11-20-2012, 01:49 PM   #20
BigBoosting
First Lieutenant
 
Drives: 09' M3 6MT
Join Date: Aug 2012
Location: Savannah

Posts: 349
iTrader: (2)

Quote:
Originally Posted by tmaung View Post
Why are you running Stage 3 without supporting mods?
If you understand what the term supporting mods are then you would understand that for a pull or two the car is still happy on those maps.

The only thing that will happen is the car will be inconsistent between consecutive pulls due to higher IAT's, it should have nothing to do with fuel trims maxing out.

Stage 2 maps max my fuel trims as well. The JB4 I had was maxing fuel trims on map 5 with 30% E85. Others can run 50% E85 and not max the trims, so on multiple tunes my car is consistently maxing fuel trims well before others do.

I have an unlucky DME that seems to not have a the average fuel trim ceiling.
BigBoosting is offline  
0
Reply With Quote
      11-20-2012, 02:43 PM   #21
jdbretz
Captain
 
jdbretz's Avatar
 
Drives: '07 E92 335i, '07 E70 X5 4.8i
Join Date: Dec 2010
Location: Florida

Posts: 787
iTrader: (9)

Quote:
Originally Posted by BigBoosting View Post
If you understand what the term supporting mods are then you would understand that for a pull or two the car is still happy on those maps.

The only thing that will happen is the car will be inconsistent between consecutive pulls due to higher IAT's, it should have nothing to do with fuel trims maxing out.

Stage 2 maps max my fuel trims as well. The JB4 I had was maxing fuel trims on map 5 with 30% E85. Others can run 50% E85 and not max the trims, so on multiple tunes my car is consistently maxing fuel trims well before others do.

I have an unlucky DME that seems to not have a the average fuel trim ceiling.
The supporting mods are also to keep your hardware components happy in addition to the motor happy. Running Stage 3 boost levels without having downpipes puts excessive strain on your turbos because of the large increase in back pressure. Ultimately its your car so if you want to cause hardware to prematurely fail that is certainly your choice. With the ignition drops you are likely getting running it more aggressive than your mods can support, your car is probably slower on Stage 3 than it would be on a lower stage. Poor consistency is poor tuning and not healthy for the engine, but its your engine so your call.

If you have a your DME flashed with Cobb or the Procede Flash and still max fuel trims, I would suggest you look into your LPFP. It may be weak/weakening and having issues keeping up with your fuel demands. Hopefully you get your fueling issues sorted out soon.
jdbretz is offline  
0
Reply With Quote
      11-20-2012, 03:28 PM   #22
335xi Kevo
Lieutenant
 
335xi Kevo's Avatar
 
Drives: 2008 335xi
Join Date: Jan 2012
Location: CT

Posts: 502
iTrader: (3)

im fbo minus downpipes and stick to stage 2 maps, I agree with the above.
__________________
08' 335xi 6MT
Space Metallic Grey
Premium, Nav, Cold weather, Sport
Procede 2.5, DCI, Forge DV, PWM, Scoops, KW V1, ETS 5" FMIC, VRSF Downpipes, M3 Skirts
335xi Kevo 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 09:43 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