Another quick update after driving more today.
The little changes like UD pulley and the TT have made a difference, now I am certain about this. I did those mods mainly because I felt there was a flat spot between 3 and 4,000 rpm. After the ECU adapted a little it revs much more even through the entire rev band.
So far happy with my mods
I' take some pics later, promised!
Oh, totally forgot! Passed emmissions as well with no issues.