I'm not responsible for any stupid or illegal shit you do. blah blah
You will need Winrar or 7Zip to open some of these files, and a PDF Viewer to read most of them.
Car Porn:
FULL VAG-COM 409.1-S included is a self updating registration script. THANK YOU MATTDANGER
 
Full: Audi B5 S4 Wiring Diagrams
Full: Audi B5 A4 Wiring Diagrams
Audi B5 S4 2.7T Engine Removal
Audi/VW Diagnostic Trouble Codes (DTC/CEL)
Audi Dash Warning Lights/Symbol Meaning
ETKA 7.0 Build-597 (How to Download Torrents)
$20 eBay Vag-Com Cable Walkthrough - AUDIZINE Removed this thread. However you can still see it with Google's wonderful Cache
Here's a PDF Print out if that doesn't work anymore: Linky