Well now I have 4 DTC codes which were egr flow, map sensor, turbo issue and fan circuit. The tech had it up on laptop and cleared codes now with a KOER test I will not get rid of a P2263??? So he went a little further and while he was watching VGTDC# it would never stay steady at idle it would jump from 70 something to 20 something. And while watching the graph you can hear the idle go up and down with the graph. So we checked the map hose was ok the nipple it hooks to on the intake nothing there, Any suggestions where to go from here. Would cleaning the turbo again to any good????