[Isooow]

Hello guys  ,

I have a question. Next week I have a Alfa Romeo Giulia 2.9T in my workshop for a stage 1 chiptuning. I want to read this on the bench with Autotuner tool, but which ECU do I need, slave or master? A SnapOn technician told me that these cars have 2 ecu's which drives 3 cilinders each. I never had a car with dual ECU before. Does someone on this forum experienced this car before and knows which ECU I need for bench reading? from my point of view, I need the master ECU. But I am not sure.

Thanks for the replys