Hi. I have VR6 turbo (AUE, 022906032E) and problem with MAF. In logs flow stopped everytime  on 262 g/s, but in MLHFM max flow is rated to 310g/s. Voltage measured at MAF output is 5V on 1bar boost, however at 262 g/s voltage should be about 4,76V. WTF? Do i need remove some limitter in bin file?

im pretty sure you need to take the 200kg/h offset in the max maf limit maps , if its a Bosch one.

Yes, i'm sure, it was ~5,05V on output. This is stock  3" MAF.


Now offset is equal 200kg/h. You can see this in my bin file.


What do you mean talking about underscaling HFM? I have stock MAF and stock KLHFM (only for idle  is slightly corrected). Do you think changing to bigger housing and underscaling KLHFM will help?
Can you take a look on my file? Maybe you find what is wrong, because i don't have any ideas.

Thats why i asked, according to the specs they should ceil at ~4.5v not 5v.
5,05v sounds more like the supply not the output.

For my supercharged 3.0 GTV with a really old Motronic only used for igniton (Megasquirt for fuel) i had to limit the hot air MAF output otherwise the Motronic would drastically retard ignition or even cut it.
My superhackish but nicely working solution was to put a diode with ~0.4v forward voltage in series, which also resulted in a bit retarded igniton but still got really really nice dyno figures ;-)

Change offset to 0?  I understand that offset is a limitation to getting a full airflow reading.

MLMAX = 1000kg/h.