Here are the site's were I've gathered all my information.
Most of these site's will be in Dutch.
The TDI information site of Holland:
and for America
The site were I've got my tuning inspiration:
Here I bought the On Board Diagnostic interface.
They also made my power-box electric-diagram into a professional product.:
For all the modification information for your car (only in German):
Original used VAG-parts I buy here:
The site for al your VAG-Com questions:
VAG-COM uitleg - tips - tricks
The Dutch VW-passat page
De nederlandse VW-passat site
And here a link to a very nice passat station