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850speedy-T 850speedy-T is offline
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Default 335i scary lean - 08-10-2019, 09:35 PM

My LPFP=74-77
My HPFP=10-14
I am running with the Mhd st pump bef
And the 13.6 st jb4 firmwear
I’m running extremely rich
From 16.0 to 19.5 afr from 0-20 psi.
No blips in fuel pressures and trims are 25 all the way through the rpm range
New o2 sensors my plugs are ready for a change
Getting misfires from 2k to 3.5k RPM


07 335i 6266 st. On3 hotside parts. 7” FMIC.
JB4-MHDbef. FuelIT stage 2.
XHP stage3 Times trans. 3” charge pipe. Precision coils.
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GreyNblueE92 GreyNblueE92 is offline
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Default 08-11-2019, 06:53 AM

No logs, but make sure you're menu 4 is set correctly...
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THE BEAST THE BEAST is offline
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Default 08-11-2019, 10:57 AM

Quote:
Originally Posted by 850speedy-T
My LPFP=74-77
My HPFP=10-14
I am running with the Mhd st pump bef
And the 13.6 st jb4 firmwear
I’m running extremely rich
From 16.0 to 19.5 afr from 0-20 psi.
No blips in fuel pressures and trims are 25 all the way through the rpm range
New o2 sensors my plugs are ready for a change
Getting misfires from 2k to 3.5k RPM
Sounds like you are stuck in open loop. And your AFRs are lean, not rich
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Default 08-11-2019, 01:01 PM

Yes lean sorry for the typo.
With the single turbo jb4 firmware 13.6 menu 4 is obsolete
How can I change it from open loop.
Or what causes open loop I’m out of town but I will post logs as soon as I get back


07 335i 6266 st. On3 hotside parts. 7” FMIC.
JB4-MHDbef. FuelIT stage 2.
XHP stage3 Times trans. 3” charge pipe. Precision coils.
BeamerGeeks coding.
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Default 08-11-2019, 01:10 PM

Thank y’all for all the information I’m new to the tuning/user adjustment side of the n54 platform


07 335i 6266 st. On3 hotside parts. 7” FMIC.
JB4-MHDbef. FuelIT stage 2.
XHP stage3 Times trans. 3” charge pipe. Precision coils.
BeamerGeeks coding.
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Default 08-12-2019, 01:04 PM

Do you have a log?



http://www.fuel-it.biz/

e92 AT 335xi 2.0
Doc Race Kit 6062
Fuel-It!Platinum DIY PI Kit + Stage 2BL
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Default 08-12-2019, 05:26 PM

I will have one up tomorrow


07 335i 6266 st. On3 hotside parts. 7” FMIC.
JB4-MHDbef. FuelIT stage 2.
XHP stage3 Times trans. 3” charge pipe. Precision coils.
BeamerGeeks coding.
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Default 08-12-2019, 06:19 PM

Quote:
Originally Posted by 850speedy-T
I will have one up tomorrow



http://www.fuel-it.biz/

e92 AT 335xi 2.0
Doc Race Kit 6062
Fuel-It!Platinum DIY PI Kit + Stage 2BL
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Smile Logs attached - 08-12-2019, 07:54 PM

Here are the logs I am in Texas and my car is in Florida at the moment so I have a buddy on FaceTime sending me logs through my in dash tablet
Please let me know if I need to post anything else thank you for all your help
Attached Files
File Type: csv 2019-08-01 14_50_50_Map-2.csv (11.7 KB, 8 views)
File Type: csv 2019-08-01 14_49_23_Map-1.csv (78.3 KB, 11 views)


07 335i 6266 st. On3 hotside parts. 7” FMIC.
JB4-MHDbef. FuelIT stage 2.
XHP stage3 Times trans. 3” charge pipe. Precision coils.
BeamerGeeks coding.
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Exclamation 08-12-2019, 08:04 PM

Here is one more log under 20psi.
Attached Files
File Type: csv 2019-08-01 14_20_41_Map-2.csv (17.5 KB, 7 views)


07 335i 6266 st. On3 hotside parts. 7” FMIC.
JB4-MHDbef. FuelIT stage 2.
XHP stage3 Times trans. 3” charge pipe. Precision coils.
BeamerGeeks coding.
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Default 08-13-2019, 01:16 PM

Logs posted


07 335i 6266 st. On3 hotside parts. 7” FMIC.
JB4-MHDbef. FuelIT stage 2.
XHP stage3 Times trans. 3” charge pipe. Precision coils.
BeamerGeeks coding.
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THE BEAST THE BEAST is offline
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Default 08-13-2019, 01:40 PM

Quote:
Originally Posted by 850speedy-T
Here is one more log under 20psi.
No codes ???? That to me looks like 02 sensor issue.
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Default 08-13-2019, 04:00 PM

I just installed for OEM bosh 02 sensors. Maby 50 miles ago
I have reset all The adaptations
I don’t know what it could be it started After the MHD back end flash and now it only runs on bank 1 02 sensors. Single turbo so idk


07 335i 6266 st. On3 hotside parts. 7” FMIC.
JB4-MHDbef. FuelIT stage 2.
XHP stage3 Times trans. 3” charge pipe. Precision coils.
BeamerGeeks coding.
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Default 08-13-2019, 06:22 PM

The Only codes I have gotten are. bank 2 upstream and downstream communication but I think that is because of the single turbo bef. and outside temperature sensor


07 335i 6266 st. On3 hotside parts. 7” FMIC.
JB4-MHDbef. FuelIT stage 2.
XHP stage3 Times trans. 3” charge pipe. Precision coils.
BeamerGeeks coding.
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850speedy-T 850speedy-T is offline
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Default 08-13-2019, 06:24 PM

Dave @ BMS/Fuel-It!


07 335i 6266 st. On3 hotside parts. 7” FMIC.
JB4-MHDbef. FuelIT stage 2.
XHP stage3 Times trans. 3” charge pipe. Precision coils.
BeamerGeeks coding.
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Default 08-13-2019, 10:00 PM

Something is up...

AFR is lean on both banks, and your trims don’t budge from 25

Are you sure the o2s are installed correctly?

Are you running rear o2s?

What fuel?

Also I don’t see PI listed in your signature- set your fuel bias to 0 of that’s the case



http://www.fuel-it.biz/

e92 AT 335xi 2.0
Doc Race Kit 6062
Fuel-It!Platinum DIY PI Kit + Stage 2BL
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Default 08-14-2019, 04:18 AM

Okay the o2s have separate style plug your every one on the car and the wires and plugs are in good shape.
I am running bank 1/2 downstreams they are located at the end of the down pipe.
Im running 93 pump no port injection.
I will look up how to change the fuel bias to zero


07 335i 6266 st. On3 hotside parts. 7” FMIC.
JB4-MHDbef. FuelIT stage 2.
XHP stage3 Times trans. 3” charge pipe. Precision coils.
BeamerGeeks coding.
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Default 08-14-2019, 11:06 AM

Quote:
Originally Posted by 850speedy-T
Okay the o2s have separate style plug your every one on the car and the wires and plugs are in good shape.
I am running bank 1/2 downstreams they are located at the end of the down pipe.
Im running 93 pump no port injection.
I will look up how to change the fuel bias to zero
User adjustments- fuel bias- just change all columns to 0 & save

You could try disabling one of your rear o2s as well

Definitely something going on with your primaries tho.



http://www.fuel-it.biz/

e92 AT 335xi 2.0
Doc Race Kit 6062
Fuel-It!Platinum DIY PI Kit + Stage 2BL
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Default 08-14-2019, 02:19 PM

Thank you. So it is a o2 sensor problem?
if anyone knows how to disable an O2 sensor that would be great information as well.

The O2 sensors show up on the log but when I read codes through jb4 it shows communication issues with upstream bank 2 and downstream bank 2

That didn’t start until I used the single turbo back in flash from MHD


07 335i 6266 st. On3 hotside parts. 7” FMIC.
JB4-MHDbef. FuelIT stage 2.
XHP stage3 Times trans. 3” charge pipe. Precision coils.
BeamerGeeks coding.
Reply With Quote
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Default 08-15-2019, 11:09 AM

Quote:
Originally Posted by 850speedy-T
Thank you. So it is a o2 sensor problem?
if anyone knows how to disable an O2 sensor that would be great information as well.

The O2 sensors show up on the log but when I read codes through jb4 it shows communication issues with upstream bank 2 and downstream bank 2

That didn’t start until I used the single turbo back in flash from MHD
Not sure what version MHD has.

Let’s try this- download / flash our most up to date ST flash direct from us.

Tuner pro can disable a rear o2.

But let’s start by having your reflash, but using the file direct from us here (just to eliminate any variables)



http://www.fuel-it.biz/

e92 AT 335xi 2.0
Doc Race Kit 6062
Fuel-It!Platinum DIY PI Kit + Stage 2BL
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850speedy-T 850speedy-T is offline
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Default 08-15-2019, 08:03 PM

Okay how do I get the file directly from bms my email istylerjaytatum@gmail.com


07 335i 6266 st. On3 hotside parts. 7” FMIC.
JB4-MHDbef. FuelIT stage 2.
XHP stage3 Times trans. 3” charge pipe. Precision coils.
BeamerGeeks coding.
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Default 08-15-2019, 09:42 PM

Here’s our firmware &
Default settings : JB4 N54 Single Turbo Setup Directions - N54Tech.com - International Turbo Racing Discussion

Our BEF maps: N54 BimmerBoost MHD Back End Flash Maps - N54Tech.com - International Turbo Racing Discussion



http://www.fuel-it.biz/

e92 AT 335xi 2.0
Doc Race Kit 6062
Fuel-It!Platinum DIY PI Kit + Stage 2BL
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Default 08-16-2019, 07:17 AM

Great thanks


07 335i 6266 st. On3 hotside parts. 7” FMIC.
JB4-MHDbef. FuelIT stage 2.
XHP stage3 Times trans. 3” charge pipe. Precision coils.
BeamerGeeks coding.
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