There is not anything in the code that would cause the engine to shut down. Have you checked for error codes?

The difference between COSY ecu and ANTI ecu is the ANTI ecu has fixed a bug in the original coding. The CARD ecu fixes the same problem and also changes only a few bytes in these tables;

'Wastegate Desired Load Table'
'Wastegate Transient Load Multiplier'
'Wastegate Integral Clip for TP'

and adjusts these parameters;

'Wastegate Integral Gain'
'Wastegate Proportional Gain'