Alfa 156 1.9JTD too slow and too much consumption

Hello everyone…. so I have now 55`tkm with my “lamen Alfa” 110PS top speed after long start max. 160KM/h.. The Prunto from my girlfriend with 60 HP went off better. After some visits in the Alfa Wekstatt always the same result according to. Car Master – and I don’t know it can be very expensive. Then last week I looked for a free workshop in Gilching on which could immediately tell me the error and the air mass meter was defective. That is a te il from Bosch that measures the mixture Kostet in exchange Euro 261.-.. What I then had built in. And now it goes back like hell and the consumption also dropped by 1.6l per 100km. I hope I could help someone with my experience….. Mighty good Hasta la vista… Thomas