I take your point prj, and agree with you on most of it, but I have a little background on how an engine works, just maybe not enough, and very little compared to you. I will try to take some time on my old combustion class book to refresh and improve my knowledge on ICE.
However, if you can help me with the questions I asked on your feedback on my tune, that would be very helpful.

Hi guys ! Happy new year !!

So some news on my “project”, I had some time to flash some first tunes and test them on my car during my holidays! It has been working quite properly so far, the car is already much more reactive.

However I am having issues with the requested boost (plsol)… From 5500/6000 rpm and on, my requested boost is dropping and not following the requested load (rlsol) anymore, so I guess something is capping it down but I haven’t figured out what yet.

First, in my logs I checked that my requested load wasn’t capped, and it is not, the rlsol is requesting 180 load, and following my LDRXN values. However the actual load is dropping.. when the requested boost is too.
So I tried to figure this out… if I am not mistaken if the requested boost is too low, then actual one is of course too low too, then maf is too low, then actual load is too low also… as a simplified process I am imagining something like :  Requested boost > Actual boost > Actual maf > Actual load  
Therefore I would like to have plsol following rlsol, but I haven’t found a clear answer so far on what map/parameter I should be looking for in order to make plsol follow rlsol?
I have been looking in the forum, wiki etc but maybe missed an obvious answer !
The IAT should no be involved at this time of the year with the very cold temperatures we have I guess..
Also my LDPBN and KFLDHBN are tuned so that they don't interfere with requested boost too.

Can someone please point me to the right direction ?

Thanks !

Here the log I did, if needed in .csv I can add them when at home. 

Nice to see people sharing their stuff.
I just came back to this so to say hobby, bought myself the tools needed for flashing MED9.1. I did ME7 two years ago on my GTI but had to give it up due to work. Coming back to MED9.1 on my 'new' mk5 gti leaves me with a lot of questions (don't worry I am a silent reader) and A LOT of stuff to learn. I will try to contribute as much as I can but I just started all over couple of days ago. Keep up the practice!

What fuel does the car drive?

Here is a graph I did with the .csv logs (posted in previous posts) to compare specified load to specified boost



So in red I circled the area on which you can see the requested boost (yellow color) not following anymore the requested load (brown line) and dropping a bit too much... I would like the requested boost to follow requested load but can't find out how... I guess either a map is limiting at high rpm, or the engine ran into high calculated egt or knock and pulled down the requested values... but can't find how to avoid this, any help?

You have knocking burning.