[mrx79]

Intake Air temperatures are 24-28?C (sometimes 30?C).
First number is at the beginning of the 3rd gear pull, second at redline.

I understand what you say, i'am just not very compfortable with higher ignition advance numbers right now. Don't want to hurt something and i stayed away from high boost much advance tuning until now. ;-)

I think i just have to get warm with it...

the 22.5 is pretty much the safe MBT for that boost Level. Checked that in a series of dyno pulls without WI.

Do you have a (very) rough number on how much more advance i would normaly need or at least which would be definitly too much advance?
Do you think i should see a regain of Tq. by adding a series of +2, +4, +6 degrees? or do you think i would need even more?