[Thatslow.n54]

3100 boost pressure control deactivation. With a 2e68 knock-sensor 1

Has anyone ever experienced these codes and has a solution. I can clear them and be good for a few weeks before it happens again and I have to let the car sit clear the codes then I can drive again.

[Geo467]

Hi! I am looking for someone who can help me. I have this car:
E93 335i with forged internals, je pistons and fcp rods, hydra performance turbos, custom exhaust without cat, chargepipe, intercooler etc.
The car is not going lower then 11s on 100-200 kph on any mhd stage 2+ map 98 ron. Every map beside v5 produce throttle closure or missfire when I hard accelerate. I will post some logs here. Maybe someone can give me an advice.

https://datazap.me/u/geo467/v10-and-v5?log=0&data=23

[Geo467]

I upload two logs with v10 when you can see the tps getting closed and v5 when everything is ok but the car is still slow. Only 11s 100-200 with traction turnes off.

[Sgop335]

Originally Posted by Geo467

Hi! I am looking for someone who can help me. I have this car:
E93 335i with forged internals, je pistons and fcp rods, hydra performance turbos, custom exhaust without cat, chargepipe, intercooler etc.
The car is not going lower then 11s on 100-200 kph on any mhd stage 2+ map 98 ron. Every map beside v5 produce throttle closure or missfire when I hard accelerate. I will post some logs here. Maybe someone can give me an advice.

https://datazap.me/u/geo467/v10-and-v5?log=0&data=23

The v5 log looks fine but it is slow. Not sure why, timing is missing...Is the compression good? Transmission?

[Geo467]

My tranmission is build to hold 800+ and is like new. Compression test is also good. I am to a dead end. I am working now with wedge. He told me I have a boost leak.

[whyzee125]

Originally Posted by Geo467

Hi! I am looking for someone who can help me. I have this car:
E93 335i with forged internals, je pistons and fcp rods, hydra performance turbos, custom exhaust without cat, chargepipe, intercooler etc.
The car is not going lower then 11s on 100-200 kph on any mhd stage 2+ map 98 ron. Every map beside v5 produce throttle closure or missfire when I hard accelerate. I will post some logs here. Maybe someone can give me an advice.

https://datazap.me/u/geo467/v10-and-v5?log=0&data=23

That's super strange. I've never seen it have 0 timing. Any codes possibly related to knock sensors?

[whyzee125]

Originally Posted by Bluemeover

https://datazap.me/u/bluemeover/log-...og=0&data=3-20
91 oct 6466 port injection how’s she look

Who did the tune? I'd detune it a bit quickly, as it seems too aggressive for the fuel you have. You've got corrections across all 6 cylinders for most of the pull and major throttle closure for more than half of the pull.

[335i_slow_]

I’m trying to see if my hpfp is healthy by reading my logs on MHD but to be honest besides the Pressure rail psi i dont know what to look for. And someone inform me what to look for?

[whyzee125]

Originally Posted by 335i_slow_

I’m trying to see if my hpfp is healthy by reading my logs on MHD but to be honest besides the Pressure rail psi i dont know what to look for. And someone inform me what to look for?

There’s an excellent article somewhere about interpreting logs for this platform. Everyone should read it as it’s informative and quite interesting.

To answer your question, your rail pressure should never under any circumstances dip below 1,500 psi during a full throttle run. Lots should be done in 3rd gear starting at around 2,500 rpm’s WOT to 6k+ then shift into 4th before letting off.

If you dip below 1,500 during that, your HPFP is not healthy.

[suspect]

Been getting 30ff shadow code but in logs boost target was usually met. I can now see the boost target not being met. Still dont have limp mode or CEL.

https://datazap.me/u/suspect/3rd-gea...-23&solo=2-3-4

I first saw the 30ff shadow code after doing OFHG and been trying to track this down. The vacuum hoses look like they have been replaced before, they are not brittle and easy to take on/off the nipples. I tried spraying brake cleaner around intake manifold with air box still present and didnt hear the engine rev up or down. By looking at the log could you give an opinion on whether this looks like a vacuum issue or a boost leak? If it was a vacuum leak wouldnt the wgdc be maxed out at near 100% trying to close the waste gates or is it the other way round for boost leaks? Turbos are old with rattly wastegates so they might be on their way out but I just want to rule out I have not broken anything doing the OFHG first but not sure where to look. Thanks.

[gazzess]

Can someone help. I'm struggling to see what's wrong and MHD are no help.
Car was on the Dyno.
Pulls to 3k revs and the throttle drops off for a few seconds and then pulls up again. 400 bhp it hit after.

Here is the log with throttle closing https://datazap.me/u/gary-peter/rece...og=0&data=3-21

Here is a time it worked https://datazap.me/u/gary-peter/didn...og=0&data=3-21

Only fault on the ecu is fan. I have race fans on it as it's a drift car.
MHD is trying to say it's stalling because it thinks it's not cooling itself.
Also they are saying it looks like it's going into limp mode but it's not.

Someone please help



He is the

[Podunk]

Originally Posted by dreyo27

Really good Idea for a thread, should sticky.


stephen335xi you have quite a few timing corrections, and you need an intercooler asap. Your IAT are way up there, on top of the LPFP dipping and your boost is below target

i noticed my target boost and actual boost don't match up on my logs on a Stage1+ ( 91 octane tune, target is 16.5 actual is 11 to 13), i was wondering if this is due to having TCS active, or if the tune just doesn't have the proper WGDC to hit target? it definitely has more power in the 5-6K range, and down lower seems to be more stout according to the speedo, but the butt dyno isn't really in agreeance with the speedo below 5K RPM.
i'd post a log, but datazap doesn't want to produce one for some reason..

[suspect]

Originally Posted by Podunk

i noticed my target boost and actual boost don't match up on my logs on a Stage1+ ( 91 octane tune, target is 16.5 actual is 11 to 13), i was wondering if this is due to having TCS active, or if the tune just doesn't have the proper WGDC to hit target? it definitely has more power in the 5-6K range, and down lower seems to be more stout according to the speedo, but the butt dyno isn't really in agreeance with the speedo below 5K RPM.
i'd post a log, but datazap doesn't want to produce one for some reason..

You probably have a similar problem as me. I’m on stage 1+ too and no longer meeting 16.5psi target. It’s either a vacuum line issue or boost leak.

If it was traction control you would see the one of the torque limiters when logging and throttle cut.

[Podunk]

Originally Posted by suspect

You probably have a similar problem as me. I’m on stage 1+ too and no longer meeting 16.5psi target. It’s either a vacuum line issue or boost leak.

If it was traction control you would see the one of the torque limiters when logging and throttle cut.

aaah i've seen it mentioned that target and actual may vary because the tunes WGDC isn't adjusted to actually meet that PSI on youtube.

however if others are meeting it, then this likely isn't my issue and liek you said boost leak or vacuum line leak. as the car has 184K i'm going to lean towards old vacuum tanks leaking. ( honestly i want to replace them with some VTTO tanks anyway, less plastic the better ) however i suppose the Orings on the hot side pipes could be leaking as well.. will need to get some soap and water and pressurize the system from the intake charge pipe with the compressor. and block off the air filter snorkels.

[MosKos]

Greetings to all. Please help me, the car full fbo. I faced the problem of detonation on the gearshift, in particular from 3 to 4 and from 4 to 5 gear, because of this I lose the power of the internal combustion engine, I assume that the automatic transmission is to blame since I downloaded the firmware of the xhp drag mode box and there is no detonation at all, I will attach the log. gasoline oct93 alcohol in the e10 tank did not help. the coils are new candles too, the intercooler has changed everything without success, help us figure out the gearbox or not. Below I will attach logs without drag mod and with drag mod. There are no errors in the car, only twitching at idle when the car is cold. on the weaker mhd stage 1+ stage 2 firmware, the machine behaves the same way with detonation. I'm sorry for my English, I use a translator.
https://datazap.me/u/lolser/log-mhd-...?log=0&data=20
https://datazap.me/u/lolser/mhd-stag...?log=0&data=20

[TiAgAu]

Originally Posted by MosKos

Greetings to all. Please help me, I faced the problem of detonation on the gearshift, in particular from 3 to 4 and from 4 to 5 gear, because of this I lose the power of the internal combustion engine, I assume that the automatic transmission is to blame since I downloaded the firmware of the xhp drag mode box and there is no detonation at all, I will attach the log. gasoline oct93 alcohol in the e10 tank did not help. the coils are new candles too, the intercooler has changed everything without success, help us figure out the gearbox or not. Below I will attach logs without drag mod and with drag mod. There are no errors in the car, only twitching at idle when the car is cold. on the weaker mhd stage 1+ stage 2 firmware, the machine behaves the same way with detonation. I'm sorry for my English, I use a translator.
https://datazap.me/u/lolser/log-mhd-...?log=0&data=20
https://datazap.me/u/lolser/mhd-stag...?log=0&data=20

I dont think it's been solved google "6AT Post shift timing corrections - lets end this"

Your WG is quite high and boost and load are well below target. Check for boost leaks.

[Nick54]

Hey not sure if anything is weird with my log can someone have a look? Running canadian 94 octane on stock plugs
https://datazap.me/u/n54nico/afr-check?log=0&data=3-21

[TiAgAu]

Originally Posted by Nick54

Hey not sure if anything is weird with my log can someone have a look? Running canadian 94 octane on stock plugs
https://datazap.me/u/n54nico/afr-check?log=0&data=3-21

Textbook example. Looks perfect!

[oVeRdOsE.]

Sorry, not MHD, but can someone take a quick look to see if everything seems to be in shape?

car's run great. Not much power low rpm, but this is expected for a single turbo.

Mods : n54 single turbo 6262bb, meth 50/50 single nozzle 600cc, 5'' stepped IC, DI only.

https://datazap.me/u/cpt00/may-24-20...2&tmax=1098.39

[Nick54]

Originally Posted by TiAgAu

Textbook example. Looks perfect!

thank you!

[minulache]

Update time. I replaced all the gaskets, no more leaks detected after the turbo but still same result on Stg 1: https://datazap.me/u/minulache/log-1...og=0&data=4-16

I also put Stage 1+ for curiosity on the car, and the boost seems a bit better, but still under target and negative STFT:https://datazap.me/u/minulache/log-1-2nd

Any other ideas...?

N55 engine here

[Kennybruv]

Trying to see if this log is normal for boost and wgdc after installing my intercooler

https://datazap.me/u/tyoken/possible...og=0&data=4-19
seems like my boost has always been slightly off target even before install.