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 11 
 on: Yesterday at 12:50:19 PM 
Started by marantzvieta - Last post by marantzvieta
Hello all

New approach to this topic:

With the swap to VR5 / PD130 MAF we were trying to implement two changes at the same time: MAF type (from HFM2 to HFM5) and diameter increase (from 2,5" to 2,75"). So I had the idea to go one step at the time to try and diagnose if the my problems were caused by the maf type change or the diameter change.

So I did the test with a good known 2,5" HFM5 maf from a ME7 1.8t from a collegue's car. Converted MLHFM from 512x1 to 256x1 and put the map in ecu, and the car idled as bad as with the VR5 MAF. So problem seems to come from the maf type change.

I remembered people mentioned they deleted the negative readings from the map (which I didn't trying to see if it worked out of the box, as remember, VR5 uses HFM5 MAF with M3.8.3 ecu and this has negative values in it), but so did I zeroed those values and the car now runs much better but still slowly goes back to stumbling... But it's some progress  Shocked by only changing MLHFM and zeroing negative values. Both 1.8T and VR5 HFM5 mafs are having the same behaviour and both MAFs are sending to the ecu the correct signal voltage to the air it is flowing, checked with multimeter and VCDS. So I think we may be on the right track.

I have seen PRJ list the maps he changed to adapt HFM5 from R32/Phaeton to M3.8.3, but he also adapted other injectors at the same time and the list is a big mix. Here it is for reference: http://nefariousmotorsports.com/forum/index.php?topic=21532.0title=

FGAT0
MLST
MLHFM
KLWF
KFMLDMX
KFLF
Cold start cranking map. IDK the name found in ASM.
TVUB
KFBAKL
KFVAKL
ABAKN
FBAWN
FVAWN

I believe the only maps related to the MAF are MLHFM and MLST, but MLST being only the initial MAF reading for startup I consider it may not be involved afterwards... I have gone through M3.8.3 damos and FR and haven't been able to see anything else that may need tweaking.

We would be very appreciated if anybody with some experience or knowledge could chime in and give us a hint on what to look at or consider relevant to keep moving forward. I belive this to be an interesting topic to all of us with AEBs, AGUs, VR6s, with the old style mafs which are stupidly expensive and hard to find, to be able to switch over to a more modern and cheaper (but yet Bosch original) component.

As always, thank you all in advance.

Best regards




 12 
 on: Yesterday at 11:29:05 AM 
Started by LynixGO - Last post by LynixGO
Thank you prj!

Works like a charm now

used indeed the wrong file.

 13 
 on: Yesterday at 07:15:38 AM 
Started by Cheekano - Last post by Cheekano
Hi, still looking?
Yes please!

 14 
 on: Yesterday at 05:08:04 AM 
Started by Norwegian1.8T - Last post by dal
Some time ago an guy posted an mod in this FB group for the EEPROM of mk4 cluster to make the needle faster as like the R32.
https://www.facebook.com/groups/1510511965685749/

Dashdumpedit also has this option:


 15 
 on: Yesterday at 05:02:09 AM 
Started by Norwegian1.8T - Last post by dal
Some time ago an guy posted an mod in this FB group for the EEPROM of mk4 cluster to make the needle faster as like the R32.
https://www.facebook.com/groups/1510511965685749/

 16 
 on: Yesterday at 04:04:22 AM 
Started by LynixGO - Last post by prj
For that MAF you need TT 225 file. BEA. BAM probably is the same also.

Not narrowband that was released when this MAF didn't even exist yet.

 17 
 on: Yesterday at 02:13:35 AM 
Started by JulienR - Last post by Tomosinga
Hi, Did you ever find a solution?

 18 
 on: Yesterday at 01:43:14 AM 
Started by vpereira - Last post by _nameless
Good afternoon,

I have been trying to connect with my amarok 2013 2.0 btdi, after installing the drivers and setup as dumb mode in VCDS, my cable now shows up at the top device list in Nefmoto, but when I try to connect with the vehicle I doesn't make it.

Got stuck now, tried different baud options, not sure if needs another configuration to work.

Validated FTDI device is in dumb mode.
Disconnected
Connecting...
Starting slow init connection.
Connecting to address 0x01.
Slow init failed.
Disconnected
Connecting...
Starting slow init connection.
Connecting to address 0x01.
Slow init failed.
Disconnected


Appreciate any help, thank you!!
Nefmoto only works on me7 ecus nothing else you have a edc17 ecu so to be frank, not a chance in hell it will ever do anything with that ecu. Buy a clone version of pcm flash and a sm2 clone if you want to do that, you can find them on aliexpress for $60 bucks for the set normally.

 19 
 on: July 05, 2025, 11:09:29 PM 
Started by vpereira - Last post by vpereira
Good afternoon,

I have been trying to connect with my amarok 2013 2.0 btdi, after installing the drivers and setup as dumb mode in VCDS, my cable now shows up at the top device list in Nefmoto, but when I try to connect with the vehicle I doesn't make it.

Got stuck now, tried different baud options, not sure if needs another configuration to work.

Validated FTDI device is in dumb mode.
Disconnected
Connecting...
Starting slow init connection.
Connecting to address 0x01.
Slow init failed.
Disconnected
Connecting...
Starting slow init connection.
Connecting to address 0x01.
Slow init failed.
Disconnected


Appreciate any help, thank you!!

 20 
 on: July 05, 2025, 06:58:54 PM 
Started by LynixGO - Last post by LynixGO
Hello,

I have 1.8T engine code AUM
06A906032HJ with K04 hybrid 440cc injectors with 4 bar fpr
Part number injectors: 0280 155 968
Now i have replaced my MAF with Audi S3 MAF.
Part number of new MAF: 06A906461M
Its slightly bigger and ofcourse needs to be changed in the file.
I changed my MLHFM map and coppied it from file: 8L0906018N
now car is running very rich idle -25% and cant get it to run normally.
when i change maf back to original with old file it has no issues
i dont know if the MLHFM map in file (8L0906018N) is correct for my MAF sensor

any help is appreciated.

KRKTE = 0.06400
TVUB = 1.8133 | 1.2000 | 0.7627 | 0.4987 | 0.3787

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