Hello guys, I'm new here. Been following threads but decided to join as this is an interactive and helpful forum. I've just got my first Volvo, A 2002 Volvo s60 2.4 non-turbo, Automatic tyranny. Issue is the vehicle consume Alot of gas and its noticeable from the tail pipe having carbon build up. I've changed Airflow meter, map sensor, O2 sensors and all are OEM. Catalyst is intact. I run the recommended tyre pressure. Checked fuel pressure and Injector system all fine. Now I feel its the ECU. Any input would be appreciated.