Hello, anybody have good experience with 1.8t bfb 163hp maf sensor with 70mm maf housing ? First I copy MLHFM 512x1 from factor BAM 225 file and as a result is ps_w under pvdks_w , below 5500rpm a bit smaller, after 5500rpm more . Measured mass air flow is a bit smaller  +- 10g/s .
Next I use mafadjust.exe software and 60mm to 70mm rescale, ps_w is above pvdks_w to 5700rpm.

What you think about this ?  Settings with BAM mlhfm is very wrong ?

Maybe only good solution is oem complete BAM maf sensor ?

Thank You very much. 

Im using a BAM copy in that case
Did you copy KFKHFM also?

No, kfkhfm is stock bfb. I see BAM kfkhfm at max load is 1.00 and BFB kfkhfm have 1.023 above 4000rpm so in that case when I copy BAM kfkhfm I will be have lower ps_w at wot, right ?   I need higher, especially  above 5200rpm  :/

With your stock BFB MLHFM?

I have tested four MAF sensors on my stock car. They all have same part number, used ,but in good condition
And all have different reading, about 3-4% difference in reading.
My point is:
Your car is not new, all these parts are 20 years old and have many many miles, soo do your best, it doesen't need to be perfect, but keep in mind that your goal is to make it perfect.
Bdw 3 inch housing is 73 mm, and you schloud measure BFB housing. I think it is not 60 it have few mm more or less