Bogdan H

Hey guys! Help me out... I bought my car with only 31.000 km - it was made in December 2008 so it has a Common Rail engine. The car stud for around 9 months there - so I added some stuff to clean the injectors, I cleaned the MAF with a contact cleaner and so on. The behavior is quite strange though - I also connected the Torque App and I see the values from the turbo boost. Sometimes it works brilliantly and the turbo kicks in and it goes from 0.1 to 1.3 - 1.4 BAR - that is 20 PSI. The thing is, that after a long drive, during the drive, the turbo starts to die. The smoke behind turns black and the turbo pressure doesn't go up anymore 0.2 - 0.3 is max. The car is standard - no mods, no nothing, except for 33-inch tires, and a winch. A buddy of mine who had multiple patrols but with older engines told me that the last engine should have no limp issues and it should work normally and he suggested to change the MAF sensor. What is your opinion?