Offset for precontrol at Targetboostdynamic (or so)

[JohnDaviz]

I was browsing through WinOLS and actually looking for something else.

But i found the Table "KF_ATLVSTPDYN"

I tried to translate it from german in the topic title. Does anybody have a clue what this table is used for?

If you look at the the table you can read

Dynamikerkennung fuer Sollladedruck = Dynamic recognition for Targetboost


What made me curious is that above 5k rpm the cells are zeroed out.

So i was wondering if anybody has ever also stumbled across that table or know what it means... Not sure if it has something to do with the PID System

 

[carabuser]

It's an adder for dynamic operation. So when you have a sudden change in boost target this adds to the wastegate target temporarily. I suppose it was added to make the car pick up a bit faster hence the bias at lower revs where spool will be slower.

Dynamic operation is a sudden change in pedal position. So you have dynamic boost and timing and probably fuelling.

 

[JohnDaviz]

Got it.

I wonder if it would make sense to play with the values when bigger turbos are installed.

Do you also have more insight on the dynamic timing and fueling topics?!

 

[carabuser]

I suppose it might improve response. I think getting the pre-control tuned well helps the most so your wastegates are always in the right ballpark when you start to push the car.