If you don't change the map that does "8000", "9000" and so on, which 486 and I are talking about, you won't get IQ values above what 1000 is specified on your smoke maps.
If its set to 1000 max, Example:
you have 900 set to 50, and 1100 set to 70.
Even with maf 1100+ you will end up fueling 60 max, which corresponds to 1000.
That's what got me confused and into finding out WHY it was doing this, and discovering that 10x16 correction for maf and IAT. (pretty stupid imho, as maf is already IAT corrected- mass airflow!)
Now you correct the top line to be 15000 on axis and all across instead of 10000, you will get the 70 or whatever max you set.
A lot of tunes that I have seen don't seem to mess with that and give full fueling at 850 or 950. Causes smoke for that time period boost is rising to max but already satisfying 950 mg/s for example (around 15 psiG). So that small time from 15 psiG to your max boost- smokeee... then max boost, you can be smoke free.
That was why I had to figure this out, I don't like smoke like that, plus it's a tiny bit of lag to make fueling wait for airflow/boost. Some people don't mind though, but to me smoke = wasted fuel and sooted up vanes lol.