Thinking - if after cam changeover pressure is allowed higher than 2461mbar, then probably it has something to do with the selected camshaft position.

The culprit should be fpbrkds_w together with KFPBRK and KFPBRKNW.
I think that boost should be FF after rlsol_w is divided by fupsrl_w in FUEDK.

Then whatever PRG does does not matter, since it's an addition.

And finally, that gets DIVIDED by fpbrkds_w. And fpbrkds_w is set HIGHER with NWS active, based on KFPBRKNW.
Now when fpbrkds_w drops, requested boost gets lower as well.

My fnwue is 0.99604 3000 to 5000 rpm.
KFPBRKNW is 1.0564 in the same range. If I apply NWS correctly (0.99604*1.0564 + (1-0.99604)*1.0463) I get 1.0563.

The calculations there are 16 bit, so maximum requested value should be 65535/25.6/1.0563 = 2423.51 mbar.
I get 2461 - maybe that's due to PRG, maybe I'm just wrong.

But it seems to me that you can pretty much only request 2550 mbar if fpbrkds_w = 1.
And if that is true, then there is no point touching DSLOFS, since fpbrkds_w is never 1, but it's slightly larger.

Need to test my theory. I will probably also set KFPBRKNW and KFPBRK to the same value around the switchover point to prevent the PID going nuts.
I still want to PID control my boost, as I don't really need more than 2500 mbar.

Yup. I also flattened KFPBRK/NW

Not a fan of the huge discontinuity in req boost.

Not good for PIDs (as i point out in the s4wiki tuning article)

yea.

I set the last column of NW similar to the other one, so I don't get a rough changeover.
I would not say flattening it is the best way to go, but that's just my opinion.


Btw, it is always better to work out what needs to be done to them by yourself, looking at the FR.
You will learn many useful things in the process and you will also know what you can potentially break.

Before you flatten that table, look up what else it's output is used for.
Of course, if you don't speak german, it might be a bit complicated... oh well.

It is good you want to find out things for your own. That's the right attitude.
However, don't take "proven tunes" to heart too much. I learned that a long time ago.

Those, who speak in cryptic riddles on forums are usually not nearly as smart, as they want themselves seen to be.

I second this.

I mostly compare the maps from Berttos's stage 3 file, Nefmoto's stage 3 file, and my base tune sent to me by Storm trooper.  I dont copy the changes, I try and find what they have changed and then research on my own why the changes were made.  I trust these tunes because most of the work done in them is documented in this forum.  I really like how almost every map  threee have modded, and I have questions about, there will be a 5 page thread about it with some really great input and the thread usually ends with a solid conclusion.  I am basically using their tunes as a resource as I make my own tune.

Right now I am focusing on load and am soaking up anything I can find related to it.   

Yeah like 8 years ago when I was just getting started with my B5 RS4