ni97
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« on: September 02, 2019, 09:23:52 AM »
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Hi,
I need help to be able to use a Golf IV V6 MAF sensor on my 1.8T AGU. I cannot find the mistake in my tune, the car starts but runs unsteady and misfires.
Of course I changed the pin out for the 5 pin new MAF housing.
1. -
2. 12V
3. Sensor Ground ECU Pin 12
4. 5V
5. Sensor Signal ECU Pin 13
And I checked the funktion of the MAF sensor.
my approach at the tune:
I locate the MLHFM Maps and convert them into Airflow in kg/Hours.
AGU with M3.8.3: factor 0,125/ offset -200
V6 with ME7.X: factor 0,1/ offset -200
Now I scale the V6 map from 1x512 to 1x246 and change the negativ Values to 0.
Does anybody know where my mistake is ? Or can explain how to rescale the AGU KLHFM Map correctly for the newer generation of MAF sensors?
Thank you very much
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BlackT
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« Reply #1 on: September 02, 2019, 09:59:48 AM »
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You use MAF sensor for M7.x ECU on M3.8
Why you do that?
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eliotroyano
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« Reply #2 on: September 02, 2019, 10:12:15 AM »
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Also sensor orientation inside MAF are different.
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ni97
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« Reply #3 on: September 02, 2019, 11:15:02 PM »
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Because I want a bigger MAF sensor, and the V6 MAF sensor is easy to instal on the original airbox.
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BlackT
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« Reply #4 on: September 02, 2019, 11:31:52 PM »
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Post you boths, new and old map.
Or simly find a housing from VR6, or some ATMO BMW or MERC
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ni97
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« Reply #5 on: September 03, 2019, 12:50:52 AM »
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Yes, I will do it later. Do you want the complete map with all values or just a picture of the graph?
The V6 is easier to fit in my car and I already installed it. But must be possible because people also drive S3 MAF sensors on M3.8.3, and that's the same typ or not?
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ni97
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« Reply #6 on: September 03, 2019, 03:19:03 AM »
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These are all values of the AGU and the V6, without factor or offset.
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BlackT
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« Reply #7 on: September 03, 2019, 04:17:27 AM »
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Can you post table
voltage and g/s
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ni97
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« Reply #8 on: September 03, 2019, 05:44:35 AM »
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Sure
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eliotroyano
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« Reply #9 on: September 03, 2019, 06:38:42 AM »
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Because I want a bigger MAF sensor, and the V6 MAF sensor is easy to instal on the original airbox.
you can use a VR6 12V MAF that is totally plug n´play. Other plus is you can use the MLHFM map directly for that sensor. |
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« Last Edit: September 03, 2019, 06:47:44 AM by eliotroyano »
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ni97
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« Reply #10 on: September 03, 2019, 07:09:12 AM »
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Yes I know, but I have the V6 MAF Sensor and the airbox already  Aside from that I am interested how to use these newer MAF sensors like from the S3 on M3.8.3 becouse its seems to be possible. I thought maybe someone here knows how. |
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eliotroyano
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« Reply #11 on: September 03, 2019, 07:29:30 AM »
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Yes I know, but I have the V6 MAF Sensor and the airbox already Aside from that I am interested how to use these newer MAF sensors like from the S3 on M3.8.3 becouse its seems to be possible. I thought maybe someone here knows how.  |
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ni97
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« Reply #12 on: September 03, 2019, 08:23:14 AM »
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Are you sure about the pinout? i figured out that the AGU ECU don’t send 5V to the MAF sensor.
I think ECU Pin 12 is Signal Ground and ECU Pin 13 is the signal. I took the 5V from the throttle.
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