ThaNks problem is that the bag isnt pumping when i drive like 300 meters. When we did the calibration with autologic the car gave air susp inactive with reservoir pressure static when filling. than the compression went to 0;3 and we heard a very loud beep coming underneath the airtank we coukdnt find anything.. Put new compressor and we calibrated the car and went out for a test drive with the old compressor. Car drove 20 miles with no problem. Went home by the highway and guess what? Front side was sitting lower but still pumped up... I really dont have a clue..maybe the valve block?