I have yet to come across a 1.8T Golf/Jetta that will allow me to create a datalog using ECUx or Setzi's logger... VCDS works but is slow as 60 weight oil on a -20 deg day and doesn't log enough variables.
I remember someone saying that they run a separate k-line to the ECU but this cannot be done on someone elses car. I figure there has to be some other solution.
What about the NefMoto logger? I haven't tried it but I will be attempting to use the loggers in a couple weeks. I have a '02 1.8t GTI. The tranny is out... I wore out/broke a Wavetrac diff believe it or not..