Q5 DTC Boost Control Too Slow -- Help

[PhunkFX]

Hi,

I keep getting the DTC listed below on my wife's Q5. It threw a CEL today. The vehicle runs fine, smells from all of the deletes, but I did get this code before the turbo went bad about a year ago.

So, about 20k on this turbo, fully deleted including high and low pressure EGR. Runs fine and averaging 38MPG regularly. Malone Stage 2.

Has anyone seen or had issues with this listed below? I don't want it to creep up on me and become a bigger issues again. I wonder if there is any kind of vacuum leak or issue caused from removing sensors during the deleted?

21110 - Turbo/Supercharger Boost Pressure Control
P226C 00 [232] - Too Slow
MIL ON - Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 218532 km
Date: 2019.12.28
Time: 15:04:28

Engine speed: 1857.00 /min
Normed load value: 54.9 %
Vehicle speed: 63 km/h
Coolant temperature: 90 °C
Intake air temperature: 11 °C
Ambient air pressure: 940 mbar
Voltage terminal 30: 14.640 V
Unlearning counter according OBD: 40
Charge Pressure Actuator: activation: 49.32 %
Charge Pressure Actuator: acknowledgment: 51.97 %
Ambient temperature: -1.0 °C
Charge air pressure specified value: 1609 hPa
Accelerator pedal travel: 21.74 %
Air mass: actual value (mg/stroke): 939.6 mg/stroke
Actual charge pressure: 1873 hPa


Readiness: 1 1 0 1 X

Cheers