[omg n54]

Originally Posted by NoGuru

Are you on stock plugs? Go one step colder.
https://www.ecstuning.com/b-ngk-part...six/n54plugkt/

Okay perfect that's what i needed to know
Would it be better to go two steps colder? I'm not familiar with ignition systems really
Thank you

[NoGuru]

Originally Posted by omg n54

Okay perfect that's what i needed to know
Would it be better to go two steps colder? I'm not familiar with ignition systems really
Thank you

No, I think for you one step would be better.
Do a little searching on here and you will find the gap that works best for you.
I think it will be about .020 or .022 but like I said, search.

[kriswithak]

Hey guys, first post , not new to modifying cars, but new to the MHD and tuned n55 scene. Picked up a 2011 e92 335i a couple months ago with 63k miles.
I've done all new fluids, spark plugs, before doing anything.
I now have a BMS intake, vrsf charge pipe, and a 5" stepped FMIC.

Thoughts on this log?

https://datazap.me/u/krisunfiltered/...77&zoom=41-130

[DTOAST3]

Good morning! I am still getting a 29E0 and 29E1 Mixture Control Codes. Would you guys mind checking out this log i just pulled? Thank guys!

2008 n54 335i, Stock except Dual cone intake. Just replaced vacuum lines, spark plugs, and leaking boost control solenoids.

https://datazap.me/u/bigj/101819-3rd...og=0&data=3-24

I am new to this but does it look like my throttle position fluctuates a lot while at wide open throttle?


**I made a second log and it looks like my throttle position is everywhere on it too. I am pretty sure it should be at 81 when at WOT. does that sound correct?

https://datazap.me/u/bigj/101819-3rd...og=0&data=3-24

[BM3Rrrr]

Originally Posted by DTOAST3

Good morning! I am still getting a 29E0 and 29E1 Mixture Control Codes. Would you guys mind checking out this log i just pulled? Thank guys!

2008 n54 335i, Stock except Dual cone intake. Just replaced vacuum lines, spark plugs, and leaking boost control solenoids.

https://datazap.me/u/bigj/101819-3rd...og=0&data=3-24

I am new to this but does it look like my throttle position fluctuates a lot while at wide open throttle?


**I made a second log and it looks like my throttle position is everywhere on it too. I am pretty sure it should be at 81 when at WOT. does that sound correct?

https://datazap.me/u/bigj/101819-3rd...og=0&data=3-24

Throttle corrections are normal, its the DME trying to adjust as the boost meets/exceeds targets (trying to stop from overboosting)

[dpaul]

Originally Posted by NoGuru

Log looks pretty good but you are getting a few timing corrections.
If I activate my coils by checking the box before flashing I usually don't get any corrections, only when the coils are not enabled do I see some.

Do you have the box checked in MHD?
Boost looks good btw.

Your fuel trims are excessive - you max bank 1 at 4K rpm then they both go strongly negative up to 6K. These swings are not normal. Colder plugs are not going to help you.

If you think you have a leaky injector, fix it right now, ASAP. Do not keep running this way. It's not just about minor driveabiliity issues. The excess fuel can dilute the oil, leading to more serious problems

[thormessiah]

Hello all, trying to pinpoint a 29e1 and 29e0 code that keep popping up. Here are 2 logs https://datazap.me/u/volfwaley/log-1...0&data=3-15-20

[omg n54]

Originally Posted by dpaul

Your fuel trims are excessive - you max bank 1 at 4K rpm then they both go strongly negative up to 6K. These swings are not normal. Colder plugs are not going to help you.

If you think you have a leaky injector, fix it right now, ASAP. Do not keep running this way. It's not just about minor driveabiliity issues. The excess fuel can dilute the oil, leading to more serious problems

What are the best way to pinpoint the leaky injector?

[BM3Rrrr]

Originally Posted by omg n54

What are the best way to pinpoint the leaky injector?

Let your car sit overnight, pull each spark plug and if they look wet and smell of fuel then you have a leaky injector.

[dpaul]

Originally Posted by BM3Rrrr

Let your car sit overnight, pull each spark plug and if they look wet and smell of fuel then you have a leaky injector.

+1

But exactly why do you think you have a leaky injector? You can't infer that from the log.

[DTOAST3]

What you guys think? 08 n54 stock except DCI. Looks like my stft are still high even after replacing everything except for the engine. I also just reset the adaptations.

https://datazap.me/u/bigj/102319-3rd...og=0&data=3-24

[cruizinmax]

Originally Posted by omg n54

https://datazap.me/u/omgn54/3rd?log=0&data=2-3-20
I have two concerns with my log here, first i believe i have a leaky injector from cold start misfires and odd cold start behavior and second, is my boost supposed to be tapering down as i near redline like my log shows?
I have on stage 2+ with bimmerlife coil kit on 91 oct. with catless dps, dci, and intercooler.

I'm currently diagnosing this same issue. It started after installing the Bimmerlife coil kit. Most recently I swapped to new coils and for the last 2 days the car has been good. I may have somehow gotten a bad batch of coils or my injectors started leaking coincidentally. I'll wait to make judgement. 🙂

[JC70e90]

https://datazap.me/u/jc70e90/log-157...data=3-7-22-28

First time posting a log, hopefully this works... there are two logs on the link

I am working on getting this car tuned and am having some issues. My Tuner says the WGDC after PID is a bit low , and in one log I have some timing corrections on Cyl one. Im going to replace or swap that coil to see if it moves. Do you guys have any more suggestions for me.

Mods- VTT GC lite 2.0 turbos, relocated inlets, catless DP, high flow secondary cats, Stg 2 LPFP, 7 inch vrsf intercooler, charge pipe with tial BOV. 2 step colder plugs

Car 07 e90 335i auto

[chch231]

https://datazap.me/u/ch/log-15722034...10-11-15-16-20

I've had new HPFP, LPFP, injectors, coil and sparks but the moment I try to boost the car, it stutters and if i go any further, it starts to misfire at random cylinders.

What is the issue here? No matter MHD Stage 1/2 tune, I experience the same issue.

2008 N54 335i DCT

[BM3Rrrr]

Originally Posted by chch231

https://datazap.me/u/ch/log-15722034...10-11-15-16-20

I've had new HPFP, LPFP, injectors, coil and sparks but the moment I try to boost the car, it stutters and if i go any further, it starts to misfire at random cylinders.

What is the issue here? No matter MHD Stage 1/2 tune, I experience the same issue.

2008 N54 335i DCT

Need to see a proper log at WOT.
Timing corrections can sometimes be due to the map being to aggressive for the fuel octane. I would try the 91 oct map first and see if that clears up the corrections or alternatively try running a bit of E85 with the current 93 oct map.

[BM3Rrrr]

Originally Posted by DTOAST3

What you guys think? 08 n54 stock except DCI. Looks like my stft are still high even after replacing everything except for the engine. I also just reset the adaptations.

https://datazap.me/u/bigj/102319-3rd...og=0&data=3-24

Can you quickly list what you have replaced/done to get the trims down?

[Chris1337]

Originally Posted by chch231

https://datazap.me/u/ch/log-15722034...10-11-15-16-20

I've had new HPFP, LPFP, injectors, coil and sparks but the moment I try to boost the car, it stutters and if i go any further, it starts to misfire at random cylinders.

What is the issue here? No matter MHD Stage 1/2 tune, I experience the same issue.

2008 N54 335i DCT

mods? I would check for boost leaks

[DTOAST3]

Originally Posted by BM3Rrrr

Can you quickly list what you have replaced/done to get the trims down?

Hi! I have replaced vacuum lines, boost solenoids, spark plugs, rotated bank 1 and 2 coil packs(didn't change anything), and i also puled the spark plugs to smell for fuel in case of injector leakage(found nothing). I also reset adaptations using INPA. Currently there are no more leaks being detected when performing the smoke test.

[BM3Rrrr]

Originally Posted by DTOAST3

Hi! I have replaced vacuum lines, boost solenoids, spark plugs, rotated bank 1 and 2 coil packs(didn't change anything), and i also puled the spark plugs to smell for fuel in case of injector leakage(found nothing). I also reset adaptations using INPA. Currently there are no more leaks being detected when performing the smoke test.

Have you done a log at idle? Id be interested to see if the trims are high under no load.

Get the car to operating temperature
Start log at idle for 30 seconds
Increase idle speed to 1500rpm and hold for 30 seconds
Increase idle speed to 2500rpm and hold for 30 seconds
Let off gas pedal and let idle for 30 seconds
Stop log

Log both STFT and LTFT for both banks

Have you cleaned/inspected the MAP sensor? (one on the intake manifold)
Next thing to replace would be both pre-cat 02 sensors and re-log
If nothing changes its time for a new set of injectors. Leaking injectors wont cause lean fuel trims but if the injectors are dirty/clogged they will.

[chch231]

Originally Posted by Chris1337

mods? I would check for boost leaks

Catless DPs, FMIC, BMS Intakes, upgraded CP. Basically FBO.

[chch231]

Originally Posted by BM3Rrrr

Need to see a proper log at WOT.
Timing corrections can sometimes be due to the map being to aggressive for the fuel octane. I would try the 91 oct map first and see if that clears up the corrections or alternatively try running a bit of E85 with the current 93 oct map.

Alright, will try to do that. Cause at that point if i went any further, the car will start stuttering and misfire.

[DTOAST3]

Originally Posted by BM3Rrrr

Have you done a log at idle? Id be interested to see if the trims are high under no load.

Get the car to operating temperature
Start log at idle for 30 seconds
Increase idle speed to 1500rpm and hold for 30 seconds
Increase idle speed to 2500rpm and hold for 30 seconds
Let off gas pedal and let idle for 30 seconds
Stop log

Log both STFT and LTFT for both banks

Have you cleaned/inspected the MAP sensor? (one on the intake manifold)
Next thing to replace would be both pre-cat 02 sensors and re-log
If nothing changes its time for a new set of injectors. Leaking injectors wont cause lean fuel trims but if the injectors are dirty/clogged they will.

I really appreciate your input. I performed the log you had requested above. I have cleaned the MAP sensor and have also replaced the Pre-cat O2's.

I see there are 2 map sensors. I have cleaned the one on the manifold. Can the map sensor on the charge pipe also cause a lean condition?

Can i monitor the injectors using INPA and see of something seems off?

https://datazap.me/u/bigj/102919-idl...og=0&data=3-24