No spark, ECU Comm Error? 90 AWD TSI Options

[bigjiggy81]

Im having a problem with my 90 tsi awd, its got a new rebuilt motor in it and the caps have been replaced like last month. After the rebuild the motor would start but sputter out of the exhaust, so we had the ecu caps replaced. And now the car will not even start. We have fuel, but no spark. The timing marks are all aligned. We have replaced the power transistor unit and also the coil pack, but we have no spark still. The mpi fuse checks out good also, we do not have a clue on what to check next. When we plug in the pocketlogger, it says ECU COMM error, dunno if that could be it. The crank angle sensor used to have to be turned all the way advanced to get the car to run, but now of course the car wont start, so can a bad CAS cause no spark? I am lost, help me!