quattro85
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« Reply #15 on: January 12, 2023, 02:32:59 AM »
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Yes and no simpler method.
Also in case of LPG you are not going to burn anything by running lean. Further away from stoich burns colder not hotter.
Might need to adjust timing a little though.
It is really amazing how wide spread misconcepts with colder/hotter burning mixtures of different fuels exists. Hundred of times I heart from local "tuners" that richer is better - even for diesel and LPG running engines. They can't understand that LPG injected in gaseous state (maybe 99% of locally fitted lpg systems) totally screw EGT regulating attempts of motronic. Yeah lean lpg mixture will not burn exhaust valves, however incorrect ignition timing and running on stock LBTS mixtures can do the trick. |
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yutu
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« Reply #16 on: January 12, 2023, 06:47:41 AM »
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It is so, and if you not gonna do it by yourself, you need to pay someone on here to do the "hard" part.
Really though if you want to be economical in a touareg you wouldnt have used a gas guzzler design mpi VR5 in it IMO.
I only need help to remove the restriction of 1 to 14.7 fuel mixture in the firmware . and I will correct the fuel mixture maps myself . the best idea for me would be if someone had damos for this firmware on the vr5 170 horsepower |
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quattro85
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« Reply #17 on: January 12, 2023, 09:39:34 AM »
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removing lambda=1 "restriction", which is hardcoded in ME7 is "hard" part that was quoted by Blazius.
It is not possible to change it, only modifying calibration area, so damos will not help you in this.
ME7 will select lowest lambda value (lamfa, lambts, lamkh etc) as long as it is lower than 1.
it is something like desired lambda = min(1, lamfa, lambts, lamkh,,,)
You need to change this 1, and it is hardcoded, not coming from any table, line or variable.
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yutu
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« Reply #18 on: January 12, 2023, 04:00:47 PM »
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removing lambda=1 "restriction", which is hardcoded in ME7 is "hard" part that was quoted by Blazius.
It is not possible to change it, only modifying calibration area, so damos will not help you in this.
ME7 will select lowest lambda value (lamfa, lambts, lamkh etc) as long as it is lower than 1.
it is something like desired lambda = min(1, lamfa, lambts, lamkh,,,)
You need to change this 1, and it is hardcoded, not coming from any table, line or variable.
then how do I make the motor work in the modes I need on a mixture of 1,14 ? Maybe there is an possibility to make a fuel mixture of 1 to 16.6 in another way |
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quattro85
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« Reply #19 on: January 12, 2023, 11:57:23 PM »
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No there is no other way.
As prj already stated, if it is narrow band O2 sensor ECU, then there is workaround that can be exploited, but when it is wideband ECU only possible solution is changing hardcoded value in firmware.
Is it clear now?
Maybe you can build some shitty Arduino "translator" between wide band O2 sensors and ECU, but I doubt it will be much cheaper and doing so you are introducing more complexity and more points of failure.
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yutu
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« Reply #20 on: January 13, 2023, 06:01:50 AM »
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No there is no other way.
As prj already stated, if it is narrow band O2 sensor ECU, then there is workaround that can be exploited, but when it is wideband ECU only possible solution is changing hardcoded value in firmware.
Is it clear now?
Maybe you can build some shitty Arduino "translator" between wide band O2 sensors and ECU, but I doubt it will be much cheaper and doing so you are introducing more complexity and more points of failure.
is there an option to change the linearization of the oxygen sensor in the firmware so that it lies to the ECU and shows the wrong mixture? and then I corrected the cards , taking into account the incorrect readings of the lambda probe . Or where can I learn how to change the constraints in 1 ? |
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prometey1982
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« Reply #21 on: January 13, 2023, 06:05:57 AM »
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Very strange decision. Just find somebody who can find lambda constants in the code. And give to him some money for this work.
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yutu
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« Reply #22 on: January 13, 2023, 07:48:22 AM »
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Very strange decision. Just find somebody who can find lambda constants in the code. And give to him some money for this work.
and who can? I didn't find anyone. And I myself would like to understand and know the firmware |
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fknbrkn
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mk4 1.8T AUM
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« Reply #23 on: January 13, 2023, 07:55:37 AM »
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You asked me at the drive2. Youve got the price
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yutu
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« Reply #24 on: January 13, 2023, 08:11:31 AM »
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You asked me at the drive2. Youve got the price
well, it's a market. we need to ask all market participants and know all the prices who will do for how much. And not to rush to the first one who answered. |
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_nameless
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« Reply #25 on: January 13, 2023, 08:18:04 AM »
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I can do it. $400-$500 depending on how long and how annoying you are to deal with.
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Giving your mom a tuneup
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yutu
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« Reply #26 on: January 13, 2023, 10:50:25 AM »
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I can do it. $400-$500 depending on how long and how annoying you are to deal with.
do we have a forum or business platform with chiptuning announcements here?? Why is everyone here only selling their services, and not suggesting how to solve the problem? |
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prj
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« Reply #27 on: January 13, 2023, 12:24:20 PM »
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Here is how to solve the problem:
Option a)
1. Disassemble the file.
2. Find where the limiter is for lambda = 1.
3. Modify it to whatever you like.
If you have no experience, it might take you a few years.
Option b)
Pay someone who spent these few years of their life learning it to do it for you.
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yutu
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« Reply #28 on: January 13, 2023, 03:49:05 PM »
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Here is how to solve the problem:
Option a)
1. Disassemble the file.
2. Find where the limiter is for lambda = 1.
3. Modify it to whatever you like.
If you have no experience, it might take you a few years.
Option b)
Pay someone who spent these few years of their life learning it to do it for you.
So I am a chiptuner. only I make a chip on the edc-15 1.9 tdi and 2.5 tdi. Therefore, I want to learn how to make a chip on me7.1. Where can I learn chip tuning of these ECUs and where to start looking for the lambda 1 limitation. I am ready to study for several years . |
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prometey1982
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« Reply #29 on: January 14, 2023, 01:46:11 AM »
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So I am a chiptuner. only I make a chip on the edc-15 1.9 tdi and 2.5 tdi. Therefore, I want to learn how to make a chip on me7.1. Where can I learn chip tuning of these ECUs and where to start looking for the lambda 1 limitation. I am ready to study for several years .
Start from this thread http://www.nefariousmotorsports.com/forum/index.php?topic=2515.0title=and continue search by "lean burn" words. |
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