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Title: Help! AGU with V6 MAF Sensor. Rescaling 1.8T M3.8.3 Post by: ni97 on September 02, 2019, 09:23:52 AM 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 Title: Re: Help! AGU with V6 MAF Sensor. Rescaling 1.8T M3.8.3 Post by: BlackT on September 02, 2019, 09:59:48 AM You use MAF sensor for M7.x ECU on M3.8
Why you do that? Title: Re: Help! AGU with V6 MAF Sensor. Rescaling 1.8T M3.8.3 Post by: eliotroyano on September 02, 2019, 10:12:15 AM Also sensor orientation inside MAF are different.
Title: Re: Help! AGU with V6 MAF Sensor. Rescaling 1.8T M3.8.3 Post by: ni97 on September 02, 2019, 11:15:02 PM Because I want a bigger MAF sensor, and the V6 MAF sensor is easy to instal on the original airbox.
Title: Re: Help! AGU with V6 MAF Sensor. Rescaling 1.8T M3.8.3 Post by: BlackT on September 02, 2019, 11:31:52 PM Post you boths, new and old map.
Or simly find a housing from VR6, or some ATMO BMW or MERC Title: Re: Help! AGU with V6 MAF Sensor. Rescaling 1.8T M3.8.3 Post by: ni97 on September 03, 2019, 12:50:52 AM 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? Title: Re: Help! AGU with V6 MAF Sensor. Rescaling 1.8T M3.8.3 Post by: ni97 on September 03, 2019, 03:19:03 AM These are all values of the AGU and the V6, without factor or offset.
Title: Re: Help! AGU with V6 MAF Sensor. Rescaling 1.8T M3.8.3 Post by: BlackT on September 03, 2019, 04:17:27 AM Can you post table
voltage and g/s Title: Re: Help! AGU with V6 MAF Sensor. Rescaling 1.8T M3.8.3 Post by: ni97 on September 03, 2019, 05:44:35 AM Sure
Title: Re: Help! AGU with V6 MAF Sensor. Rescaling 1.8T M3.8.3 Post by: eliotroyano on September 03, 2019, 06:38:42 AM 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.Title: Re: Help! AGU with V6 MAF Sensor. Rescaling 1.8T M3.8.3 Post by: ni97 on September 03, 2019, 07:09:12 AM 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.
Title: Re: Help! AGU with V6 MAF Sensor. Rescaling 1.8T M3.8.3 Post by: eliotroyano on September 03, 2019, 07:29:30 AM 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. (https://cdn1.imggmi.com/uploads/2019/9/3/774f1b83fc8a794fadb0c3c29f082b8a-full.png) Title: Re: Help! AGU with V6 MAF Sensor. Rescaling 1.8T M3.8.3 Post by: ni97 on September 03, 2019, 08:23:14 AM 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. |