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ram00sa ram00sa is offline
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Default Trims jumps to 50 - 11-29-2021, 08:07 AM

hello there i been noticing lately specially post shifts and sometimes during normal log that my AFR 2 reads 20, and i noticed trims jumps all the way to 50 suddenly

fuel used 95ron (91 oct ) i use to have X98 race fuel from VP in the tank about 4 liters per half a tank

i tried to use MHD only flash and putting the jb4 into 4-4 to see if the problem is with the jb4 or electrical problem that could cause the jb4 to read weird values, ( could be a 3 year old battery ? )

i just put new spark plugs NGK at 0.019

running on 19t tdo4 turbo

please let me know if there is anything i missed
Attached Files
File Type: csv bad trim2.csv (10.9 KB, 36 views)
File Type: csv low speed missfire or hickups .csv (11.6 KB, 35 views)
File Type: csv mhd stage 2 91 oct.csv (19.2 KB, 36 views)
File Type: csv mhd stage 2 91.csv (18.8 KB, 36 views)
File Type: csv trim 2 jump.csv (14.5 KB, 34 views)
File Type: csv trim 2.csv (15.8 KB, 36 views)
File Type: csv trim jump race.csv (18.6 KB, 33 views)
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ram00sa ram00sa is offline
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Default 11-29-2021, 08:35 AM

also there is a weird jb4 readings
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File Type: csv weird cuts.csv (16.7 KB, 32 views)
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Cannon @ BMS Cannon @ BMS is offline
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Default 11-29-2021, 11:32 AM

Reset User adjustment settings back to default settings for hybrid turbos and reset adaptions. Then get a log in map 2


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Default 11-29-2021, 02:01 PM

When you log....

To properly evaluate the tuning, we'll need a full throttle JB4 log from 40-90mph on a safe private track.

You only need to upload one log at a time...trying to do a bunch of different scenarios for input only confuses things and nobody wants to try and sort all of that out.



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ram00sa ram00sa is offline
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Default 11-29-2021, 04:21 PM

Map 2 as requested.
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ram00sa ram00sa is offline
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Default 11-30-2021, 06:14 AM

Any idea what trims value usess to calculate the numbers.because trims max out first then AFR Follows then bank 2 4 5 6 misfire
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Default 11-30-2021, 10:32 PM

Quote:
Originally Posted by ram00sa
Map 2 as requested.
Not default settings.
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ram00sa ram00sa is offline
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Default 12-01-2021, 09:18 AM

The only thing not defaulted is the duty bias . It cannot maintain boost if so
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Default 12-02-2021, 01:09 PM

Quote:
Originally Posted by ram00sa
The only thing not defaulted is the duty bias . It cannot maintain boost if so
You need to check again.
All settings.
PID gain of 60 is surely going to affect things.
Default is 25.
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ram00sa ram00sa is offline
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Default 12-03-2021, 10:43 AM

Sure I will do it . Expect boost not to be on target tho. And try to focus on the trims rather than anything else
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ram00sa ram00sa is offline
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Default 12-03-2021, 11:41 AM

I tried to replicate the problem in a single gear pull I couldn't in the limited time I had.

Here is a multi gear pull showing the trims raising at the end of 3th or 4th gear

Please disregard the under boost. It's mostly likely seloind issue or Turbo waste gate bad even tho turbo are new . China quality

Is it injectors or injectors seal LPFP or HPFP or battery or bad jb4
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Attached Files
File Type: csv P32_M2_R1_211203_211232.csv (17.2 KB, 28 views)
File Type: csv P32_M2_R1_211203_204818.csv (20.4 KB, 31 views)
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Default 12-03-2021, 09:18 PM

Have you tried resetting adaptations ?
Any codes for 02s by chance ?
Shadow codes ?
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ram00sa ram00sa is offline
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Default 12-04-2021, 07:53 AM

Alot of times it happens and no codes come up. Never had a o2 sensor code. But most of the time it goes map 4 for being to lean or trim varience And sometimes I got one or two or Al of bank 2 cyl missfire
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Default 12-05-2021, 11:13 AM

Have you checked intake manifold gaskets ?
That can cause trims variance, along with difficulty hitting boost target since it would be a boost leak under pressure/ boost. Can also cause a lean condition.
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ram00sa ram00sa is offline
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Default 12-05-2021, 03:25 PM

i just replaced the gaskets on oct the 30th, should i check the torque ?
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Default 12-05-2021, 03:46 PM

Quote:
Originally Posted by ram00sa
i just replaced the gaskets on oct the 30th, should i check the torque ?
I would pull the intake and double check the gaskets. Maybe someone else can chime in.
I would pull intake though as a pinched/blown gasket can cause all the issues mentioned.
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Default 12-07-2021, 05:51 PM

Anyone else has a different opinion based on the logs. Of trims maxing out.

After researching
It could be one of the following. But I can't read log to know exactly which one of them I can rule out

1-MSD80
2- bank 2 injectors or an injector ( most expensive) I have mix of 9 and one 7
3- bank 2 O2 sensor pre and post
4- intake manifold
5- injectors seal
6- carbon build up
7- spark plugs ( just installed with gap of .019)

There is an oil housing leak btw after I installed the bms oil cooler thermo

Missfire happens normally after 6k rpm
Or post shift (dct)
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Default 12-07-2021, 05:52 PM

Forgot to mention car has 45k miles 2009
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Default 12-13-2021, 12:15 PM

I'm going to guess you have a boost leak. FF is maxed out and you're still under boosting. You could try raising your DB's by 15 across the board but I think you'll only be compensating for the real issue. This may also be why you see the random spike in trims.



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Default 12-15-2021, 02:52 AM

I replaced outlets intercooler and charge pipes and all of the intake manifold gaskets. And vacuum lines. I just order boost solenoids letís hope itís them
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Default 12-15-2021, 01:04 PM

Or you could do a pressure test and go straight to the root of the problem.



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Question 12-18-2021, 08:08 AM

Did a pressure test. No leaks

One more thing injector 4 sounds louder than M6 full exhaust and ******* ********
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Default 12-18-2021, 04:51 PM

Quote:
Originally Posted by ram00sa
Did a pressure test. No leaks

One more thing injector 4 sounds louder than M6 full exhaust and ******* ********
What psi level did you pressure test?


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Default 12-20-2021, 04:31 PM

Pressure tests should be done at the max boost (or more) level that you intend to run.

For that injector...I'd probably replace or at a minimum switch it to another bank 1 to see if the problem follows.



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