Have no way to tell they didn't give me the 122PS (other than on the invoice)!!!
There doesn't even seem to be any indicator to say it is running on 2 cylinders. As much as I have tried I'm yet to notice any change in engine characteristics. There might be a slight lag when you put your foot down but that could easily be the turbo..
Still if it is working it seems to be working well. Maybe with a little more time behind the wheel I might notice the cylinders shut off.