my name is Maik and I am from Germany - so sorry for mistakes that might happen.
My car is an Audi A4 1.9 TDI (2006, 85kW, Motorcode: BKE). The ECU is: 03G 906 016 FE - should be EDC16U31.
In 2015 a tuner modified the software to remove the EGR.
Unfortunately he blocked the ECU for read-outs.
Reprogramming back to original should be possible - he told me via phone.
Now another ...