the Audi S4 Owners' Resource
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Welcome to www.S4Biturbo.com: the Audi S4 Owners' Resource Page: This page is a repository of information for Audi B5 Platform S4 owners. The Audi S4 came to the US in 2000 and featured a 250hp V6 biturbo engine. If you have any suggestions, useful articles, timeslips, or links, feel free to drop me an email at ochen@raidgroup.net! Last Updated: 01/03/2008 Add S4Biturbo.com to your Favorites!

Informative (and Historic?) Articles and Threads: Audi S4 Borg Warner KKK K03 Compressor Map [JPG] [Excel .xls] from QCRAZY Audi S4 Borg Warner KKK K04 Compressor Map [JPG] from FunkWeasel [Excel .xls] from QCRAZY mike01s4's ABT and GIAC ECU Exhaust Gas Temperature Testing 03/01/02 mike01s4's Aftermarket Filter Testing 03/02/02 mike01s4's Audi S4 Turbo Diverter Valve Testing (Bosch 110 vs Bosch 108 vs Forge) 03/02/02 mike01s4's Audi S4 Turbo Diverter Valve Testing Part 2 (Bosch 110 vs Bosch 114/710N vs Bosch 108/710A) 05/13/02 mike01s4's Step by Step S4 Downpipes Removal Instructions 04/22/02 DTC Engine Code Lookup Audi S4 Frequently Asked Questions Audi S4 Timeslips Audi S4 Links S4 Owner's Database Audi Dealer Survey at 1.8T.org VAST Performance AutoSpeed Performance Toy Guy Design Short Shifters and Stealth Valentine One Displays United Auto Transport car shipping

Informational:

AW: 2.8 Cam Info (preliminary findings) by Mr.Piggie 06/07/04 AW: 2000MY VS. 2001.5MY Differences by ryans4, Taner, and 0700 04/17/02 AW: 3/4ths Throttle Discussion by S4 MadMan 08/28/02 AW: 4 Signs of Bad Turbos by mike01s4 04/24/02 AW: 9 Seconds in Poland, Arek/Ozz's S4 10/31/06 AW: All About Audi Torsens by ryans4 02/23/05 AW: Audi S4 Newbie Guide by Neon01 09/29/2003 AW: Audi S4/Audiworld Newbie Guide by LI-S4 02/24/04 AW: Autospeed GT25R2 Kit is Complete! by Mark@AutoSpeed 01/11/06 AW: Coolant Sensor Failure Symptoms by SlvrBulletS4 06/06/02 AW: Definition of a Q-Ship by MarkFank 03/25/02 AW: Differences Between 2000, 2001, and 2001.5 S4s by Everyone! 05/08/02 AW: Downpipe Options Summary by RyanS4 03/11/02 AW: Downpipe Options Continued by Smokin S4 08/20/03 AW: Fuel Pressure Regulator Info by Mr. Piggie 10/08/04 AW: FMIC For Dummies by Blitzkrieg 05/07/03 AW: GoFastBits Hybrid BOV Sound Clips by Taner 12/07/01 AW: GoFastBits Hybrid Adjustable StealthFX BOV Impressions by Brian@SST 05/05/03 AW: K04 and K03s in Racing by DonIstook 08/03/02 RS: MTM S4 by NICK 04/19/02 AW: K04 Parts Info by Chaka 03/13/02 AW: Level 10 Tiptronic Transmission Details by SkydiveS4 01/19/04 AW: Manual Boost Controllers by Innovator 06/29/03 Neuspeed/Borla, MTM, and UUC VM1/VM2 Exhaust Sound Clips at Funkadelic.org AW: On larger port heads by Don Istook 02/25/04 AW: On Blowoff Valves by Don Istook 01/21/02 AW: N75 vs Manual Boost Controller vs N75+MBC by Mark P 03/19/04 AW: RS4s Imported in Colorado by Ram 02/10/02 AW: RS4 K04 Parts Numbers by jim hodgson 08/19/04 AW: RS4 OEM Bumper Install by JoshD 03/25/02 AW: Rusnak Service Report by Jyoteen 03/17/01 AW: S4 Crankshaft/Engine Block by DonIstook 07/27/02 AW: S4 Launching FAQ by Pat-SoCal 10/11/01 AW: S4 Stripped Down by Chaka 04/29/02 AW: S8 Wheels on a S4 by JoshD 02/01/02 AW: Single Turbo Conversion by KTR Performance explained by rmgreen13 07/21/03 s4what's Turbo Upgrade/Exhaust/Fuel/ECU Kit Comparison Table Smoking S4's ECU Chipping FAQ (pdf) AW: SPP Electric Fan Kit Impressions by Pat-SoCal 01/21/03 AW: Spring Rate Comparison Chart by Smokin_S4 12/10/02 AW: Stasis Differential Mod Impressions by Corey S 04/08/02 AW: Super Sized K04s by Jeff Moss 02/17/04 AW: Tire Dressing Thread 01/27/02 AW: Unorthodox Racing S4 Clutch/Flywheel Impressions by Zerin 01/31/02 AW: Wheel Weight Intertia Study by Toy_Guy 11/15/02 AW: Where Can You Get OEM Parts? by RKA 02/25/04 AW: Why more Passenger Side Turbos Fail by VonK :: Indukted 09/03/03 AW: Zero Clearance Turbochargers by imolavirus 08/23/03

Do It Yourself:

AW: 10$ Ram Air Intake by MarkP 10/17/03 AW: 2nd Gear Woes by Don Istook 02/19/02 BA: 6000K Philips VS. Stock S4 Xenons by S4Madman 04/12/02 AW: 6000K PIAAs VS. Stock Xenons by Polar 01/18/02 AW: Apple iPOD Installation by Nebuchadnezzar 02/12/02 AW: APR Stage 3 Installation by Mark P 05/27/03 AW: Allroad 402 Suspension Mod by Nebuchadnezzar 11/23/02 AS: B5 A4 Complete Workshop Manual PDF by SmoothAssassin 01/01/08 AW: Blowoff Valve Tips by Don Istook 09/23/02 AW: Blowoff Valve Tips Part 2 by Don Istook 09/23/02 BA: Bose Factory Settings Adjustment by S4MadMan 02/12/02 AW: Bose Hidden Equalizer Settings by S4PK 09/9/01 AW: Bose Hidden Equalizer Frequency Response Graphs by RobC 09/10/01 AW: Carbon Fiber Airbox pr0n!! by X-1 Racer 02/27/05 AW: City Light Installation by Jyoteen 01/13/02 AW: Coilover Install Tips by mike01s4 04/24/02 AW: Coilover Install Writeup by shep 01/26/03 AW: Custom Airbox by Blitzkrieg 06/27/02 AW: The Darintake by DarinS4Turbo 09/14/02 AW: The Darintake Home Depot Style by FunkWeasel 01/09/03 AW: Engine Bay Detailing by SWhore 06/25/02 AW: Fender Rolling Instructions.. so easy! by gandolf the white 08/27/04 AW: Fuel Filter Swap Instructions by Mike Staley 03/13/02 AW: Highbeam Upgrade Guide by Nick Gustas 07/29/02 AW: Hitachi MAF Sensor Details by VonK 04/04/03 AW: How to change your Spark Plugs by Zaphod 06/04/01 How to Install A NavPlus! AW: How to remove Seat Back by s4for5 03/28/02 AW: How to replace Downpipes by Taner 04/10/02 Improvement for Audi driveline stabilizers by jaybquick 02/22/06 AW: Innovator's Oil Bellypan Mod by AudiOx 05/12/02 AW: Lower Temp Thermal Switch Afterrun System by QCRAZY 04/29/04 AW: MAF Cleaning Advice by S4Alex 06/27/02 AW: Make Your Own Z-flo/Darintake by ZOLTAN 03/29/03 Mark's Independent Fog Light Mod Guide AW: The NASA guide to home wheel-scuff repair by NASA racer 08/29/02 AW: N75 Wastegate Bypass Regulator Valve description by VonK 11/28/02 AW: Non-Bose Symphony Hidden EQ Settings by LCP 03/28/01 AW: Oil Checking FAQ by 2K2S4 11/17/03 Piggie Short Shifter install by S4Girl AW: RNS-E Navigation (new NavPlus) Installation Information by Hal_$4shizzle 03/02/05 RNS-E Euro A6 to B5 S4 Installation by mjtaylor 07/20/05 AW: S4 Transmission Disassembled by Jim De Arras 06/08/02 AW: Seat Rocking Duct Tape Fix by rwalker 02/22/03 AW: Smartire Install by larryV 04/25/02 AW: Spark Plug Installation Tips by Milpitas2.7T 02/01/03 AW: SPP A-Pillar Pod and 60mm Omori Boost Gauge Install by Taner 08/25/01 AW: Stasis Mono-6 Brake Kit Install by Jeff Moss 02/10/04 AW: Three Ways to Throttle Adaption by MingS4 07/05/01 AW: Tiptronic RS6 Paddle Installation by VR Life 08/30/04 AW: Tiptronic Transmission Control Module Recoding by drhaller 04/04/02 AW: Tiptronic Transmission Cooler and RS4 Oil Cooler Install by BLK01S4 07/10/04 DM: Turbo Swap Documented at Dirty Motorsports by Simpply AW: VAG-COM Charting Visual How To by 2k2S4 10/21/03 VV: VW Euro Navagation Install by SVTWEB 02/23/02 AW: X1-Racer CF Airbox Installation with Pictures by AH10 11/15/05 \

Dynos, Tests, and other Numbers:

AW: 2.8 Audi S4 Dyno Charts by LePratt (Impressions) 04/24/03 AW: Airbox: Stock and Darintake VAG Testing by MasterBlaster 03/24/03 AW: Airbox: More Testing by MarkP 10/15/03 AW: AMS and AWE A-Box Audi S4 ECU Dynos by Jeff Moss 03/26/04 AW: ASP GT28RS Kit Live Tune 638whp by Mark@AutoSpeed 11/03/06 AW: AWE/Jeff Moss Stage 3 478whp Dyno by Caltech_S4 07/10/04 AW: AWE Stage 3 w/ GIAC Mobile Tuner = 429whp by Jeff Moss 02/29/04 AW: AWE Stage 3 ECU Third Gear Pull Logs by Caltech_S4 04/07/04 AW: B6 (2004+) vs B5 (2000-02) Audi S4 Performance Shootout by DonP 05/18/04 AW: CT/NY Dyno Day Results by DAP 01/24/04 AW: Dialynx's Sport Quattro Timeslip by Ram 05/12/02 AW: Downpipe Dyno Gains by NashS4 02/24/03 AW: Dyno of AWE/GIAC RSK04 (A-Box ECU) Kit by Andrew@GIAC 12/28/03 AW: Dyno of SilverBullet with K04/16 Turbos by Todd/AWE 07/16/03 Eric Tam's Great Diverter Valve Face Off! (Forge vs Bailey vs Bosch TT vs 1998 Bosch vs Stratmosphere vs TurboXS vs Porsche) AW: Flordia S4 and RS4 DUH FMIC Dynos by 0700 03/05/04 AW: GIAC XR ECU vs ABT ECU Boost and Ignition Timing by DarinS4Turbo 01/29/03 AW: Log Analysis Assistance by Various 06/22/05 AW: Harman Motive's Dyno Day Results by IOKEPA 09/12/04 AW: K04 APR Beta ECU Boost Report by LCP 01/21/02 AW: K04 ECU Software (APR, AMS) and Intake Manifold Dynos by K04Madness 04/05/03 AW: K04 Intake Air Temperature curves by MarkP 05/17/06 AW: NorCal Dyno Day Results by Milpitas2.7T 09/07/02 (More) (Pics) AW: NoVA Dyno Day Results by Shortbus S4 12/15/01 AW: Prodigy's Dyno Plots AMS vs GIAC ECUs by TRM 08/23/03 AW: RS4+Nitrous VS RS6 by Chuck-S4 07/06/03 AW: S4 ECU Chip Shootout on AWE's Dyno by xccess 03/26/03 S4 Turbo (Failure) Poll Results by DonP AW: S-flo Intake Filter Testing by zapco98 02/24/03 AW: Stage 3 Homebrew fueling UPDATE. Airbox mod and new Lemmisettings by Mike2kS4@PEB Tuning 08/20/04 SF: Video: VAST GT turbo kit vs Stage 3 S4 04/20/07 AW: VAG-COM Logging for your S4 by Me 09/08/02 AW: VAG-COM Sampling Rate Increase by 2k2S4 06/07/02

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