S4Biturbo.com
:: Various technical articles about 2.7L V6 bi-turbo engine for the B5 S4.
EdyJun's S4 Directory
:: Various technical articles that any Audi enthusiast must check.
VAG Tool Locator
:: If you don't own a VAG tool, this site can help you find someone who does.
Rob's Audiworld
:: Great Do-It-Yourself technical articles and some white papers.
Stoney's C5 A6 Bible
:: All you need to know about your C5 A6.
