[skyrimzz]

Of course you don't have to be scientist. But in my experience maybe 1% of mechanics AT MOST can really SEE what the readings TELL, not just look at the numbers! IF your pressure is too low, but ALL other numbers are ideal, my first suspect would be the boost pressure sensor itself. It was NOT in the list of your parts cannon. If the boost pressure is REALLY too low, then ONE OR MORE OTHER numbers WILL ALSO be skewed. And ONLY THEN knowing which ones are also skewed one can narrow down what could be wrong. Hence I wrote what I wrote. Without ANY data I CAN suggest you replace other parts but I CAN'T suggest which ones exactly.

that is the weird part..and that is the reason i asked for help..when i watch values,i look at air mass,boost pressure,back pressure,pressure at exuast on mainfold,temperatures and we drive ,sometimes more then 10 kilometers to see what is wrong..that is why i test it with other car..all values look the same..there was some weird thing with one guy,he had the same problems and he just plug out exaust sensor (it reads boost on mainfold exaust ) and car went well,soon as he plug it in car doesnt..i had investigate how does he works and he is connected with egr flow and as i have noticed with vgt..this is very hard problem,i do understand u that lot of people use diagnostic for reading errors..we dont..something in this car is making problems with boost and i think that is more software related..but thanks for answer..when i resolve it i will post