Limp mode at WOT after downpipes and mhd stage 2+

Occ224 · 06-18-2020, 09:47 PM

Hello I have a 2008 bmw 335i n54 downpipes, 5in fmic, charge pipe, dci, ehaust delete xhp trans tune and mhd stage 2+ flash tune.

Recently I've been going into limp mode after a long WOT around 6 seconds. Codes are

30FE - turbocharger charge-air too high
3100 - boost pressure control deactivation

I'm not sure what is causing the limp mode would anyone have an idea?
My guess is maybe the flash tune "stage 2+" cant handle the other mods? Maybe I need a custom tune?
It started going into limp mode after downpipes and stage 2+ upgrade.
Other thoughts maybe my map sensor or boost solenoids?

https://datazap.me/u/occ224/limp-mod...s?log=0&data=3

dyllan12 · 06-18-2020, 10:26 PM

Quote:

Originally Posted by Occ224

Hello I have a 2008 bmw 335i n54 downpipes, 5in fmic, charge pipe, dci, ehaust delete xhp trans tune and mhd stage 2+ flash tune.

Recently I've been going into limp mode after a long WOT around 6 seconds. Codes are

30FE - turbocharger charge-air too high
3100 - boost pressure control deactivation

I'm not sure what is causing the limp mode would anyone have an idea?
My guess is maybe the flash tune "stage 2+" cant handle the other mods? Maybe I need a custom tune?
It started going into limp mode after downpipes and stage 2+ upgrade.
Other thoughts maybe my map sensor or boost solenoids?

this is the 4th thread about same coding , no one yet to figure the issue , me and this other guy is currently waiting for boost solenoid to come in to see if that's the problems

Occ224 · 06-18-2020, 10:46 PM

Quote:

Originally Posted by dyllan12

this is the 4th thread about same coding , no one yet to figure the issue , me and this other guy is currently waiting for boost solenoid to come in to see if that's the problems

Alright thank you

NoGuru · 06-19-2020, 06:59 AM

Need logs to really see what is going on.
What are your IAT's during WOT?

Occ224 · 06-19-2020, 09:56 PM

Quote:

Originally Posted by NoGuru

Need logs to really see what is going on.
What are your IAT's during WOT?

https://datazap.me/u/occ224/limp-mode-30fe-and-30100-after-stage-2-and-downpipes?log=0&data=3

NoGuru · 06-21-2020, 07:45 AM

Quote:

Originally Posted by Occ224

https://datazap.me/u/occ224/limp-mode-30fe-and-30100-after-stage-2-and-downpipes?log=0&data=3

Nothing stood out but if you are not using Flex Fuel drop the Ethanol content and ECA voltage from your logs and add RPM, and timing on all cylinders.

Occ224 · 06-21-2020, 12:49 PM

Quote:

Originally Posted by NoGuru

Nothing stood out but if you are not using Flex Fuel drop the Ethanol content and ECA voltage from your logs and add RPM, and timing on all cylinders.

Ok thank you

feuer · 06-21-2020, 10:35 PM

Limp mode (3100) is because of the over boost (30FE) either go with lower tune or look into changing the boost pressure sensor

Occ224 · 06-22-2020, 11:21 AM

Quote:

Originally Posted by feuer

Limp mode (3100) is because of the over boost (30FE) either go with lower tune or look into changing the boost pressure sensor

It keeps overboosting no matter what tune im on. Stock 8 psi or stage 2+ 18 psi ill still overboost and hit limp mode. Probably the boost solenoid right?

feuer · 06-22-2020, 01:56 PM

Quote:

Originally Posted by Occ224

It keeps overboosting no matter what tune im on. Stock 8 psi or stage 2+ 18 psi ill still overboost and hit limp mode. Probably the boost solenoid right?

No. Could be the boost pressure sensor on the manifold or the wastegates too

Saif2018 · 06-22-2020, 03:15 PM

Quote:

Originally Posted by feuer

No. Could be the boost pressure sensor on the manifold or the wastegates too

How do you know which is causing the overboosting?

Do you have any advice on how to go about diagnosing overboosting issue, seems to be quite a few threads about it.

feuer · 06-22-2020, 04:03 PM

Quote:

Originally Posted by Saif2018

How do you know which is causing the overboosting?

Do you have any advice on how to go about diagnosing overboosting issue, seems to be quite a few threads about it.

Process of elimination. Of course there threads about. Is to be expected. These cars are over decade old. Parts fail.

Saif2018 · 06-22-2020, 06:30 PM

Quote:

Originally Posted by feuer

Process of elimination. Of course there threads about. Is to be expected. These cars are over decade old. Parts fail.

I get that, what I mean is what is more likely boost solenoids, pressure sensor or wastegates?

Which would you tackle first?

Does high wgdc indicate it could be the wastegates causing the problem?

BM3Rrrr · 06-22-2020, 07:01 PM

Underboost and Overboost codes are hard to diagnose, feuer is right (process of elimination)
I would start with the cheapest and easiest.
-Clean the sensor
-Replace the sensor if damaged
-Replace boost solenoids
-Wastegates........

Saif2018 · 06-22-2020, 09:23 PM

Quote:

Originally Posted by BM3Rrrr

Underboost and Overboost codes are hard to diagnose, feuer is right (process of elimination)
I would start with the cheapest and easiest.
-Clean the sensor
-Replace the sensor if damaged
-Replace boost solenoids
-Wastegates........

Thanks, sounds good.

Sgop335 · 06-22-2020, 09:39 PM

Pressure sensor on the manifold is mostly for vacuum not for boost.

BM3Rrrr · 06-22-2020, 11:12 PM

Correct
The one on the Charge Pipe though measures boost pre-manifold.
Would be worth cleaning both since you are already there

06-18-2020, 09:47 PM	#1
Occ224 Private First Class 13 Rep 119 Posts Drives: 2007 E92 328i Join Date: Feb 2018 Location: Niceville FL iTrader: (0)	Limp mode at WOT after downpipes and mhd stage 2+ Hello I have a 2008 bmw 335i n54 downpipes, 5in fmic, charge pipe, dci, ehaust delete xhp trans tune and mhd stage 2+ flash tune. Recently I've been going into limp mode after a long WOT around 6 seconds. Codes are 30FE - turbocharger charge-air too high 3100 - boost pressure control deactivation I'm not sure what is causing the limp mode would anyone have an idea? My guess is maybe the flash tune "stage 2+" cant handle the other mods? Maybe I need a custom tune? It started going into limp mode after downpipes and stage 2+ upgrade. Other thoughts maybe my map sensor or boost solenoids? https://datazap.me/u/occ224/limp-mod...s?log=0&data=3 Last edited by Occ224; 06-19-2020 at 09:57 PM..
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06-19-2020, 06:59 AM	#4
NoGuru Major 779 Rep 1,434 Posts Drives: 335is Join Date: Apr 2017 Location: MI iTrader: (0) Garage List 2021 Chevy Silverad ... [0.00] 2014 CTS [0.00] 2011 335is [0.00]	Need logs to really see what is going on. What are your IAT's during WOT? __________________ 2011 335is DCT BQ Tuning / BMS CAI / VRSF kittyless DP's / Synapse BOV and charge pipe / 7" VRSF Race FMIC / Walbro 535 and 450 on BMP4 / E90 tune / Diff Brace / PR Coils / Relocation Inlets / DAW Stage3+ Turbos / MMP port injection / xHP Stage 3 / FPR and -6 fuel lines
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06-21-2020, 10:35 PM	#8
feuer Major General 4288 Rep 9,224 Posts Drives: wife crazy! Join Date: Apr 2015 Location: Chicago, IL iTrader: (5)	Limp mode (3100) is because of the over boost (30FE) either go with lower tune or look into changing the boost pressure sensor
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06-22-2020, 07:01 PM	#14
BM3Rrrr Davy Jones, Giant Squid 272 Rep 913 Posts Drives: a Pirate Ship Join Date: Jun 2015 Location: The Isle of Tortuga iTrader: (0)	Underboost and Overboost codes are hard to diagnose, feuer is right (process of elimination) I would start with the cheapest and easiest. -Clean the sensor -Replace the sensor if damaged -Replace boost solenoids -Wastegates........ __________________ 2010 e90 335i LCI - xHP - Mishimoto - BMS - CPe - Turbosmart - MHD - Eibach - Koni - VMR - LUX
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06-22-2020, 09:39 PM	#16
Sgop335 Colonel 668 Rep 2,076 Posts Drives: 07 335i e92, 08 535i Join Date: Jun 2014 Location: MD iTrader: (1)	Pressure sensor on the manifold is mostly for vacuum not for boost. __________________ 335i e92 TPC 19Ts Last edited by Sgop335; 06-22-2020 at 10:58 PM..
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06-22-2020, 11:12 PM	#17
BM3Rrrr Davy Jones, Giant Squid 272 Rep 913 Posts Drives: a Pirate Ship Join Date: Jun 2015 Location: The Isle of Tortuga iTrader: (0)	Correct The one on the Charge Pipe though measures boost pre-manifold. Would be worth cleaning both since you are already there __________________ 2010 e90 335i LCI - xHP - Mishimoto - BMS - CPe - Turbosmart - MHD - Eibach - Koni - VMR - LUX
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