Check out KermaTDI. I bought a 2006 Jetta TDI after my 6. 7 Ram was lemoned and they were the most informative source I found on TDI programmers. Not sure what they have, but you must call them for the latest. I spoke with Paul about my TDI and the starting point was a 50% increase in power (I was only interested in MPG), but the economy would be boosted as well according to Paul.