No missunderstandings at all..
I trust my tuning shop, and if they say it does not work then I believe it in 100%. The only way to get around the problem right now is to put in an older non updated ECU manufactured before March / April.
Volkswagen is not stupid, they know what tuning tools that are out there and they will make it more difficult for us who want to tune our cars.
Did a little search on Piggyback and how they works, you will clearly understand that it is not only to bypass the ECU and then it works without problems.
"Newer piggy backs like the e-manage ultimate can control your ignition timing separately from your airflow readings, but there are still catches. You are able to change ignition timing maps but the e-manage simply changes the output signal the ecu sends to the coils.
The problem is the ignition timing numbers are not always consistent with the changes you make to the load sensor, whether its your map, or maf sensor. So you are guessing the timing numbers. The stock ecu also has multiple maps it can run for different conditions so you are not always consistent with the tune."
Read more:
http://forums.superstreetonline.com...lone-ecu-vs-piggy-back-ecu-eng/#ixzz3enwgGGiv
Once again it is just a matter of time, it will be a solution. I'm quite sure that Apr, Neuspeed, Eurodyne etc. trying to solve the problem in this moment...