Hello Audi friends, I’ve been driving an Audi 100 2.8E saloon EZ/02/1991 for over a year now. At the beginning the part went like hell, then somehow the power slowed down over time. Shortly before the end of the year I had the water pump renewed because it was clearly defective. The control times were also adjusted. Then my Audi pulled again perfectly. Until then about March the part had to come too far into the red speed range. Since then, the power has been especially in low rotation The number range is very poor, because you can really notice that there is no torque. Acceleration from 0 to 100 is more like 10 to 11 seconds instead of the factory specification of 8. Furthermore, a tremor can be noticed at approx. 2000 revolutions. In idle one hears that there are always slight ignition oscillations. A few weeks ago I was at the Audi contract workshop, which meant that there were 2 ignition cables torn, so 2 new ones pure, but there was only a slight improvement. They were also tested, they were perfectly fine. Then I am about 4 weeks ago to a free workshop. They then tested the compression, which is also perfectly fine. Furthermore Lambda probe and Kat were tested, also no complaints. Spark plugs are also all in order. Then the master thought it could only be the air mass meter. Ok, then ordered a new one three weeks ago. But to this day he did not find it. A few days ago he found out that my Audi 100 somehow had a special air mass meter of Japanese origin (maybe it was due to the early EZ? were later installed there others?). Now he thinks he can’t order the air mass meter, because it costs about 300 euros and the risk is too high for him that he can’t return it if the air mass meter is not the cause. So now the question to you: What’s going on? What else could it be? Is it true? the air mass meter? The master said he would try to find a used model. Do you think that makes sense?