At 4000 rpm and 1000 mg/hub of MAF you can see 1.589 value of lambda.
1.589x14.5 is an AFR of 23.0405.
1000/23.0405=43.402 mg/inj of fuel allowed.
Racing is life. Anything that happens before or after is just waiting
There is no problem with stoichiometric ratio.
I was telling how to calculate fuel limitation.
Diesel engines run lean. For example 23.0405 AFR, this is lean.
If you want more fuel with the same air mass, then you need to run richer.
How much air mass is your engine running at 4000 rpm?
Have you done any datalogging?
Racing is life. Anything that happens before or after is just waiting
Hello
I am understanding that you have 2 problems: Overboost and IQ limiter.
For overboost you need to modify turbo and vnt maps.
For IQ limitation you need to modify lambda maps.
Try to open vnt vhen overboost. And do not request too much boost at low rpm.
Racing is life. Anything that happens before or after is just waiting
Yes, For opening vnt you must decrease the value.
If you have overboost with original file, then could be stuck vanes.
For example, AFR target of 17:1 without smoke.
If you put 2100 mbar at 4000 rpm, you are near 915 mg/hub of air.
915/17=53,8 mg IQ
You change lambda from 1,589 to 1,172 to allow that IQ.
Racing is life. Anything that happens before or after is just waiting