Procede logs - fuel trims maxed - please help - BMW 3-Series (E90 E92) Forum

DallasBoosted · 11-20-2012, 01:23 AM

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.

BigBoosting · 11-20-2012, 09:42 AM

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.

DallasBoosted · 11-20-2012, 09:43 AM

Quote:

Originally Posted by BigBoosting

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).

GeorgiaTech335coupe · 11-20-2012, 10:01 AM

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.

3-Serious · 11-20-2012, 10:19 AM

I had the same problem for about a year! It drove me nuts.

DallasBoosted · 11-20-2012, 10:27 AM

Quote:

Originally Posted by nickkg37s

I had the same problem for about a year! It drove me nuts.

What did you do to fix it?

themyst · 11-20-2012, 10:36 AM

Quote:

Originally Posted by DallasBoosted

What did you do to fix it?

See his sig.

3-Serious · 11-20-2012, 10:37 AM

Quote:

Originally Posted by themyst

See his sig.

Exactly.

themyst · 11-20-2012, 10:37 AM

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.

BigBoosting · 11-20-2012, 10:45 AM

I sent off my DME yesterday for the Procede flash.

DallasBoosted · 11-20-2012, 10:56 AM

Will call later today and see about the procede flash I guess.. its what, $95?

DallasBoosted · 11-20-2012, 11:01 AM

Quote:

Originally Posted by GeorgiaTech335coupe

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.

Wedge1967 · 11-20-2012, 11:03 AM

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.

DallasBoosted · 11-20-2012, 11:13 AM

Quote:

Originally Posted by Wedge1967

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?

BigBoosting · 11-20-2012, 11:28 AM

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.

3-Serious · 11-20-2012, 11:28 AM

Quote:

Originally Posted by DallasBoosted

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.

secretsquirrel · 11-20-2012, 12:58 PM

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?

tmaung · 11-20-2012, 01:02 PM

Quote:

Originally Posted by BigBoosting

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?

DallasBoosted · 11-20-2012, 01:13 PM

Quote:

Originally Posted by secretsquirrel

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.

BigBoosting · 11-20-2012, 01:49 PM

Quote:

Originally Posted by tmaung

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.

jdbretz · 11-20-2012, 02:43 PM

Quote:

Originally Posted by BigBoosting

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.

335xi Kevo · 11-20-2012, 03:28 PM

im fbo minus downpipes and stick to stage 2 maps, I agree with the above.

11-20-2012, 01:23 AM	#1
DallasBoosted Captain Drives: '08 E92 335i Join Date: Apr 2012 Location: Dallas Posts: 732 iTrader: (2) 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 __________________ GROUND CONTROL \| STOPTECH \| VRSF \| COBB AP \| STETT \| OS GIKEN 2008 E92 335i MT
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11-20-2012, 10:01 AM	#4
GeorgiaTech335coupe Lieutenant Colonel Drives: Black BMW 335i coupe Join Date: Mar 2007 Location: USA Posts: 1,850 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.

11-20-2012, 10:19 AM	#5
3-Serious Lieutenant Drives: AP e92 335i Join Date: Dec 2008 Location: New york Posts: 451 iTrader: (0)	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.

11-20-2012, 10:37 AM	#9
themyst Major General Drives: E90 335i LCI Join Date: Feb 2009 Location: NYC Posts: 6,349 iTrader: (8)	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

11-20-2012, 10:56 AM	#11
DallasBoosted Captain Drives: '08 E92 335i Join Date: Apr 2012 Location: Dallas Posts: 732 iTrader: (2) Garage List 2008 BMW 335i [5.00]	Will call later today and see about the procede flash I guess.. its what, $95? __________________ GROUND CONTROL \| STOPTECH \| VRSF \| COBB AP \| STETT \| OS GIKEN 2008 E92 335i MT

11-20-2012, 09:42 AM	#2
BigBoosting Second Lieutenant Drives: 2008 335i 6spd Join Date: Aug 2012 Location: Savannah Posts: 225 iTrader: (0)	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.

11-20-2012, 10:45 AM	#10
BigBoosting Second Lieutenant Drives: 2008 335i 6spd Join Date: Aug 2012 Location: Savannah Posts: 225 iTrader: (0)	I sent off my DME yesterday for the Procede flash.

11-20-2012, 11:03 AM	#13
Wedge1967 Lieutenant Colonel Drives: '07 e92 AT Sport Montego Blue Join Date: Sep 2011 Location: Portland, OR Posts: 1,554 iTrader: (2)	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.

11-20-2012, 11:28 AM	#15
BigBoosting Second Lieutenant Drives: 2008 335i 6spd Join Date: Aug 2012 Location: Savannah Posts: 225 iTrader: (0)	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.

11-20-2012, 12:58 PM	#17
secretsquirrel Lieutenant Colonel Drives: 335i nFifty4LiFe Join Date: Dec 2010 Location: land of the squirrel Posts: 1,643 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?

11-20-2012, 03:28 PM	#22
335xi Kevo First Lieutenant Drives: 2008 335xi Join Date: Jan 2012 Location: CT Posts: 390 iTrader: (2)	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//PWM Meth//VRSF XI Downpipe//Forge DV//DCI//KW V1//SCOOPS//ETS FMIC//ECS GEOMET ROTORS//HAWK//CDV//PERFORMANCE SPOILER//CSL//

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