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Author Topic: What am I doing wrong?  (Read 1862 times)
JavaCrash
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« on: December 21, 2023, 11:35:41 PM »

attached is my log. Full bolt on b5 s4 with 83mm maf, 630cc injectors, walboro 525 fuel pump, yada yada the full works, anyways Im really struggling to read my log and figure out why in any gear on a WOT pull my wideband reads completely fucking rich, and in 3rd gear it really breaks up bad,but I can't think of why, KRKTE is set to the calculation on the wiki, TVUB is set to the values I found through a datasheet, and my maf was scaled by 29% to start from stock. I've replaced all evap, wastegate, and n75 lines due to cracking etc. So I do not believe it is a hardware issue but I don't know shit. Any help is appreciated. Sorry for the google drive link, log was too big for the forums.

https://drive.google.com/file/d/1xEQaoGHdj0CdGddwzJJ1hvBzpdHTMxAv/view?usp=sharing
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aef
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« Reply #1 on: December 22, 2023, 12:49:25 AM »

try to log
B_lambts
B_tabgbts

I dont know how they are called in a S4 file because i only do 1.8t.
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JavaCrash
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« Reply #2 on: December 22, 2023, 08:00:04 PM »

I will try to log b_lambts as you said, but I have my EGTs coded out in my tune and unplugged.
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prj
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« Reply #3 on: December 23, 2023, 12:30:22 AM »

I will try to log b_lambts as you said, but I have my EGTs coded out in my tune and unplugged.
Neither of those values have anything to do with your EGTs.
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JavaCrash
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« Reply #4 on: December 23, 2023, 05:30:56 PM »

Neither of those values have anything to do with your EGTs.
from http://www.nefariousmotorsports.com/wiki/index.php/Lambda_component_protection_(LAMBTS)
B_TABGBTS    LAMBTS    LOK    Exhaust temperature condition for component protection exceeded

would this not be measured from the EGT? if not ill log it, hopefully will be able to tonight.
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JavaCrash
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« Reply #5 on: December 23, 2023, 07:41:48 PM »

try to log
B_lambts
B_tabgbts

I dont know how they are called in a S4 file because i only do 1.8t.

https://drive.google.com/file/d/1zcRqGXFJ-IA-ccAskm8jaAQM9FXaY3zE/view?usp=sharing
^new log with everything logged that said "protection"

Thank you for the names of the variables i needed to log, they are in fact the same. It seems that lambts is activating immediately, how can I figure out what is causing them to trigger?
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prj
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« Reply #6 on: December 24, 2023, 02:55:13 AM »

would this not be measured from the EGT? if not ill log it, hopefully will be able to tonight.
No, start reading. The only module that has anything to do with physical EGTs is ATR, NOTHING ELSE IN THE ECU.
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prj
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« Reply #7 on: December 24, 2023, 02:57:41 AM »

how can I figure out what is causing them to trigger?
By opening the FR (Or the Alfa English ME7.3 FR) and looking at the function diagram for the LAMBTS module.

You're not gonna tune this car over the forum dude, you need to learn to read the ECU documentation to answer your questions.
Everything you're asking is right there black on white.
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terminator
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« Reply #8 on: December 24, 2023, 03:59:55 AM »

DLATRNLN
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prj
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« Reply #9 on: December 24, 2023, 10:05:36 AM »

DLATRNLN
Does not need touching if EGT's are coded out correctly (CATR, CDATR, CDATS).
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JavaCrash
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« Reply #10 on: December 24, 2023, 09:32:31 PM »

By opening the FR (Or the Alfa English ME7.3 FR) and looking at the function diagram for the LAMBTS module.

You're not gonna tune this car over the forum dude, you need to learn to read the ECU documentation to answer your questions.
Everything you're asking is right there black on white.

ill start there, thank you.

Does not need touching if EGT's are coded out correctly (CATR, CDATR, CDATS).

those are all set to 0
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JavaCrash
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« Reply #11 on: December 30, 2023, 11:04:44 PM »

By opening the FR (Or the Alfa English ME7.3 FR) and looking at the function diagram for the LAMBTS module.

You're not gonna tune this car over the forum dude, you need to learn to read the ECU documentation to answer your questions.
Everything you're asking is right there black on white.

Thank you again, my TABGBTS was set to 750c, i set this to 950c so I don't have to worry about it.
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royce5950
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« Reply #12 on: January 05, 2024, 12:12:06 AM »

raising TABGBTS really was the answer?  Embarrassed
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