yeah the car is confused i bet, the ecu is telling the turbo one thing but its isnt gettin the right fuel/air mixture
If its not got a daughter board on
1. Remove Td05 and stick TD04 on (can be had cheaply)
2. Remove boost controller
3. Install a boost gauge check your hitting 0.8-0.9 bar of boost
OR
Remove boost control valve
Get a daughter board fitted
get a remap