marto7
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« on: September 10, 2019, 02:18:16 AM »
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The car is Audi A4 B7 1.8T Me7.5 - 8E0909518AQ
I cant understand my ECU request so lean mixtures and didnt follow LAMFA map. I disabled KFLBTS with making TABGBTS=1200.Also make LAMFA map a lot richer than stock but on the logs i see AFR request is a lot leaner than the values in LAMFA. I want 0.87 on 4000rpm but ot logs i see the ECU wants 0.92 on that RPMs. Didnt touch LAMFA axis. This is the tune that i started from original file and with small amount of maps are corrected. Started with KRKTE, TVUB, TEMIN, MLHFM, FKKVS, LDRXN, TABGBTS and Lamfa.
Dont know what im missing, in s4wiki it says "The lowest value of the three (lamfa_w, lamfawkr, lambts) become your requested AFR.", but in my case it didnt. I checked in the logs if the car didnt want a lot of load or pedal isnt 100% but no, they are 100% pedal and 170 load request on 3000rpm. Think to try using KFLBTS with TABGBTS=200, but not sure how to make this map good. Will be very thankful if somebody show me good KFLBTS map.
Checked also ZKLAMFAW but it same with the tune that made by a friend before and follow lamfa perfectly.Also searched for TLAFA but i dont have in my map TLAFA exactly.Have KFTLAFA_0_A and KFTLAFA_1_A, but they are same too.Should i have map TLAFA?
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« Last Edit: September 10, 2019, 03:14:35 AM by marto7 »
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Blazius
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« Reply #1 on: September 10, 2019, 02:23:36 AM »
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The axis to lamfa is not wped but driver torque request.( its also wrong on most non corrected damos )
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« Last Edit: September 10, 2019, 02:26:09 AM by Blazius »
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adam-
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« Reply #2 on: September 10, 2019, 02:39:24 AM »
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The axis to lamfa is not wped but driver torque request
They are the same thing? Wped = 0-100% Driver request = 0-100%? |
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Blazius
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« Reply #3 on: September 10, 2019, 02:46:50 AM »
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They are the same thing?
Wped = 0-100%
Driver request = 0-100%?
No they arent. mrfa comes from pedal and cruise control, but depending on KFPED it may not be 1:1. Also on some soft , the request goes up to 120% not 100% and lamfa axis is scaled accordingly. |
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BlackT
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« Reply #4 on: September 10, 2019, 02:49:20 AM »
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What ECU do you have?
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marto7
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« Reply #5 on: September 10, 2019, 03:12:40 AM »
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ME7.5 - 8E0909518AQ
A4 B7 1.8T
Wideband lambda and closed loop control i think
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adam-
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« Reply #6 on: September 10, 2019, 03:17:40 AM »
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No they arent. mrfa comes from pedal and cruise control, but depending on KFPED it may not be 1:1. Also on some soft , the request goes up to 120% not 100% and lamfa axis is scaled accordingly.
>100% is auto |
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BlackT
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« Reply #7 on: September 10, 2019, 03:18:01 AM »
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KFZKLAMFAW_0_A
That is map for smooth AFR request. You need to put values like 15-20% in that map
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marto7
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« Reply #8 on: September 10, 2019, 03:25:55 AM »
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But this map i think is not with percent values.
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Blazius
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« Reply #9 on: September 10, 2019, 04:48:56 AM »
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>100% is auto
Not only. My manual 1.8 non turbo used 120% kfped torque request , and lambda axis. infact in my current setup i am using values up to 130%. For lamfa fueling only , KFPED, boost/load setup is critical. Just log mrfa_w, and you will find out what kind of req torque you are getting for certain rpm / and gears, then you go and adjust LAMFA accordingly. This is why you need to make sure the torque request is "correct" vs the charge/boost. And after this is done , and you still dont have the desired, then you can look at other lamfa modifying maps. |
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« Last Edit: September 10, 2019, 05:05:57 AM by Blazius »
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nyet
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« Reply #10 on: September 10, 2019, 09:45:45 AM »
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logs please
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ME7.1 tuning guideECUx PlotME7Sum checksumTrim heatmap toolPlease do not ask me for tunes. I'm here to help people make their own. Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your ex
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marto7
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« Reply #11 on: September 10, 2019, 01:06:46 PM »
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here is the logs.I even changed Lamfa X-axis to be less like on the picture below.
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nyet
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« Reply #12 on: September 10, 2019, 01:39:51 PM »
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Why are you worried about lamfa and request when your actual is showing pig rich?
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ME7.1 tuning guideECUx PlotME7Sum checksumTrim heatmap toolPlease do not ask me for tunes. I'm here to help people make their own. Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your ex
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marto7
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« Reply #13 on: September 10, 2019, 11:10:17 PM »
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I will fix the injectors, just want to know why is this happening with lamfa because cant find any solution for it
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nyet
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« Reply #14 on: September 10, 2019, 11:37:37 PM »
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You're probably going to have to log a few more variables, not sure if you'll be able to find them, to make sure it isn't smoothing or something else in the LAMFA path.
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ME7.1 tuning guideECUx PlotME7Sum checksumTrim heatmap toolPlease do not ask me for tunes. I'm here to help people make their own. Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your ex
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