Sorry for the delay, the problem was fixed few months ago. :ah:
It was indeed fried ECU.
Instrument cluster and ABS stopped communicating because of a blown fuse
ECU was not operating Variocam correctly on each bank leading to missfires, the mechanic has isolated it by disconnecting solenoid from ECU and idle returned back to normal, no missfires.
I have since replaced the ECU, reflash with my tune and reprogrammed immobilizer.
If anyone interested in the error codes:
P9111 PSM/ABS unit / defective communication
P9144 PCM unit
P9130 Voltage low
P9133 BORNE.61 low engine / incorrect signal
P1600 timeout CAN PSM
P2092
P0300 Missfire detection
P0306 Missfire cyl 6
P0304 Missfire cyl 4
P0305 Missfire cyl 5
P0303 Missfire cyl 3
P9114 CAN bus error / defective communication
In hope no one else repeats my error