Small update...
Finally I have changed the old lamda with a new Japanese one NTK.
The old one has been damaged and the engine was running to rich.
Now the mixture is stabilized in stock conditions and maybe a dyno will show us the new results.
With half of tank I have made approx. 230km and if you consider the very short ratio transaxle and the 2.0lt engine I think it's a very good result for me.
and 2 photos from my baby!
That's all for now..