[s-cars] Feels like engine misfire...or smth else?

[prr]

Hi everyone.
 
I'm running out of ideas, what could be wrong with my car.
 
When engine is cold, car runs well. I mean very well :p When temperature
reaches about 80C, feels engine is starting to miss some ignition
moments. And the thing gets worse, when the turbo pressure is reaching
1bar and over - car starts to shake and nothing more. Sometimes happens
it just on the road, going slowly, at low rpm even too.
 
Done and changed/tested so far:
 
ignition coils
power output stages (POS)
spark plugs
lambda sensor
fuel pressure
fuel filter
chip soft
map sensor
checked for boost leak's
service computer test ( btw sometimes service test shows a ENGINE SPEED
SENSOR ERROR - is it normal ? with ingition on and engine not running
it, should it show the error or not?  )
 
 
me at sick_and_tired
 
 
regards,
 
prr