For the record:

My 2010 Euro Wagon (MY09) has PCS (Post Combustion Sound). I cannot hear the PCS because I can't hear certain sound frequency. However, my wife (who has professional music training) can hear it from day 1. The PCS was fixed by Honda a couple of week ago (Knock Sensor + Software Update) and since then she can't hear any PCS. So the fix does work !!