I don't really understand the position 7 and B settings. I read the manual, but I still am not clear on this. What are the differences in the fuel curves 0,1,2,3,4 and does the spool up do anything below 4000 rpm? I have the Mafless V11.83.
On position B, the higher the number, the faster the fuel will come in. In other words, the fuel ramps up faster with rpm. It only applies between 4000 and 5000 rpm.
Position 7 is cold start. Do you have something different shown for position 7?
That would basically have a similar effect as the 4000-5000 spool fuel. I don't know exactly what rpm that takes effect. You would have to experiment to see what works best for your setup.