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

Other good starting points

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