Edc16u1 Problem

[0nixon0]

After getting a second hand ECU and Flashing eeprom for immo, im getting rough running car starts on 3 cylinders no.2 Cilinder has Electrical Malfunction P1667
Golf mk5+ 1.9 TDI PD 2006 ECU 03G906016GR Edc16u1

Any advice what I did wrong? And how to fix it.
Thank You

[morgano]

Guess ecu is defective. Or not same numbers as original.

[0nixon0]

Numbers same but You just confirmed what I thought at first trying to get it refunded ebay...

[Shmortz]

if ECU is the same or fully compatible I allways make immo off by OBD to see ECU condition, then open and clone old one if possible

[0nixon0]

Just what what I did Shmortz thanks