Turbo and VANOS?

Thank you for the information. It helped me eliminate one more possibility.

I did as you suggested, and the codes did not come back. I checked the cam position sensors, and they are wired correctly. I then looked at the DME and deleted adaptations and deleted adaptation for the variable camshaft timing control. I now receive the following codes:
DME (ECU) 120408 Charging pressure control: Switch off as consequence
DME 9ECU0 164040 Intake camshaft: installation defective
DME 9ECU0 164041 Exhaust camshaft: installation defective
I electrically activated the VANOS control solenoids with the following results: On the intake camshaft the engine stumbled but did not shut off when the solenoid was actuated at idle, on the exhaust camshaft the engine stumbled and stalled at idle.

I purchased the specialty tool set to install the timing chain kit. I was meticulous in the reassembly of the engine. I guess I don't understand why "deleting adaptations" would change the Dtc's. I have read of more than a few owners that have had the exact same thing occur to them. No one seems to know why this happens or a remedy for it.

I am working on the car listed above N20.
When I received the vehicle, the owner told me it had been diagnosed with a catastrophic failure of the turbo charger. Upon inspection I found a bad timing chain. The chain was intact; however, the guides were destroyed. After replacing the timing chain, I found the turbo had bad oil seals. I replaced the turbo. I also replaced the turbo boost solenoid. At this point I was receiving these faults:
DME (ECU) 120408 Charging pressure control: Switch off as consequence.
DME (ECU) 130304 VANOS, exhaust: control fault, camshaft jammed.
DME (ECU) 130104 VANOS, intake: control fault, camshaft jammed.
DME (ECU) 131501 VANOS, intake, cold start: not controllable
DME (ECU) 130401 VANOS, exhaust, cold start: not controllable
DME (ECU) 128E01 Oxygen sensor before cat converter: Open circuit in Nernst line
I am not concerned with the oxygen sensor.
I have confirmed the VANOS pistons are free and the VANOS solenoids are operational.
The waste gate controller is pneumatic and operational.
I am scanning the vehicle with an Autel MaxiCOM MK808BT Pro.

I have since gone into the DME and “deleted adaptations” as well as “delete adaptation variable camshaft timing control” When I did this the VANOS faults disappeared and were replaced with.
DME 9ECU0 164040 Intake camshaft: installation defective
DME 9ECU0 164041 Exhaust camshaft: installation defective
I have also electrically activated the VANOS solenoids: on the intake it caused the engine to falter when energized at idle and on the exhaust the engine faltered and stalled.

Update: When I clear the codes and restart the car, I lose 164040 Intake camshaft: installation defective and 164041 Exhaust camshaft installation defective. It's not until I increase the RPM's that the codes come back. If the camshafts were, in fact, installed incorrectly it would set a code at idle (unless the computer is in a closed loop until an increase in RPMs is seen). It leads me to believe that the computer is not seeing the Vanos functioning. In a previous test I established they do.

I did not change the camshaft gears. I did, however, disassemble and clean the oil control valves. Using a 12-volt power supply I electrically actuated the VANOS with the following results: the intake side caused the engine to falter while the exhaust side caused the engine to falter and the die. I switched the wiring on the VANOS actuators, and it made no difference. I would appear to me that the actuators are not receiving the command to operate.