Thanks for the nice comments.

Saturday was a nice day. Swapped the radiator for Airtec 60 mm model, no heat problems anymore...
Moved the map sensor to a less vibrating place and changed the hose to a more solid one. Map signal is now nice and steady.

After these we finally got to mapping this for some decent boost. First we started with making a map for the boost controller to get steady boost curve and then we started making the spark map. Using combination of Virtual Dyno and Arse Dyno we found a spark map that reaches MBT so were very happy.

Cant give any real bhp numbers of course, but currently running 1 to 1.1 bar of boost and feels about the same than the Is Sierra did with 1.5 to 1.8 bar. So yeah big surprise the big valve head flows better...

Here's a video with some flames from the exhaust.