[Cedric1234]

I am currently still having even after the things done below, 2 fault code, 290900 (air mass system: measured air too high) and 2AB500 (Boost pressure sensor, signal: Too low (implausible relative to pressure upstream of turbine and ambient pressure).

things that have been change/done/check
EGR valve changed, turbo rebuilt, clearing of soot (intake manifold), MAF sensor checked, charge air pressure sensor changed, check for leak on hoses etc done.

Any idea what needs to be check? update the ECU system etc?

thanks in advance