External links

FAQs

 * s4biturbo.com FAQ
 * Neon01's FAQ
 * LI-S4's FAQ
 * General B5 A4/S4 FAQ
 * General Audi WIKI
 * GermanCarWiki.com

Audi Parts

 * BLAUfergnugen Inc
 * Clair Parts
 * German Auto Parts
 * Geniune VW Audi Parts
 * Euro Parts Direct
 * MileOne
 * Pure Motorsport
 * Shokan Coachworks
 * 1st VW Parts
 * VWParts
 * World Impex
 * Links to other sources

Tuners

 * Achtuning
 * AMS
 * APR
 * Avalon
 * AWE
 * ECS
 * GIAC
 * MTM
 * NAV-Plus

Documents

 * Me-motronic Engine Management from Amazon.com.uk (ISBN 3-934584-34-9)
 * The 2.7-litre V6 Biturbo Design and Function Self-study Programme 198
 * A New Approach to Functional and Software Structure for Engine Management Systems - BOSCH ME7
 * Audi approved oil chart (VW 502 00 and VW 505 01) Original from AoA
 * OBD fuel trim information - BMW specific but some applies to the S4 as well

Software

 * WinOLS
 * ECUFix - Motronic checksum "corrector"
 * VAG-COM
 * Mark P's ECUx utilities page
 * Motronic map editor - Porsche specific, but still interesting
 * Bosch Motronic Reverse Engineering Project - Bare bones (but failed) attempt
 * OpenECU wiki - Subaru/Mitsubishi tuning software (Flasher, map editor, etc.)

Resources

 * NefMoto - Outstanding tuning resource
 * The definitive Audiworld DIY thread
 * AWD dynos
 * DIY MBC
 * Brake pad roundup
 * S4 1/4 Mile timeslips and videos
 * Nav retrofit information forum
 * Ticket Assassin - a MUST read
 * S4 Timeslips
 * Tire Rack
 * Speedvision World Challenge GT 2001 standings
 * Speedvision World Challenge GT 2002 standings

Audi Clubs

 * Minnesota Audi Club - For Audi owners living in MN or bordering states. Events and private discussion forums.


 * NJ Chapter of the ACNA - For Audi owners living in New Jersey. Meetings and driving events.


 * Socal Audi Club - For Audi owners living in southern California

S4 Owner Sites

 * NogaroBlue.com - Chris Ostberg's (Verrückt) S4 site.
 * Mark P's site - Mark P's site for his Imola Avant.
 * MyAudis4.com - Flyboy's Audi S4 site.
 * nyet.org/cars - Nyet's (S4Wiki owner) site.
 * AndyWhittaker.com - Andy Whittaker's site.
 * MyS4.org - Todd Nappen's 2001 Audi S4 Biturbo | B5 Audi Tuning.

Other Community Sites

 * QuattroWorld's S4 forum
 * AudiZine
 * AudiSRS.com - The place for performance Audi B5 S4/RS4 forum B6/7 S4/RS4 forum

Magazine Articles and Comparos

 * Car and Driver "sport" shootout (7/1999)
 * Car and Driver "unfair fight" shootout (10/2001) (local mirror)
 * Car and Driver - B6 S4 vs E46 M3 vs C32 (5/2003)
 * Auto Express road test