Hello dear friends, I’ve been through the temen for hours, unfortunately, without coming to a result. My problem I have a ABY transplanted into my audio 90 at first without problems only slowly he brings me to white glow the following problem: with the acceleration e.g. 3-speed from 2000 u/min charging pressure rises to about 1 bar and the engine or better said the whole car vibrates I walk down a bit of the gas and the charging pressure goes back to 0.8 bar he pulls fully on ?? I go from the gas down us try the again the pressure only to 0.8 bar and he accelerates the engine is quite normal times really warm he jerks even more for it he has the problem with higher turning numbers no more error memory is empty…(swee me always out of the diagnosis again) theverse parts have been replaced at the moment my gasseil different so that I set at full-feeted pedal unfär the throsselklappe only 1/4 makes me feel better ….