Engine        
****** Most Common problems with Audi S4 (B5) ******
Internal: What are the internal differences between the S4 engine and the RS4 engine?
ABS: Heat Covering (davenew)
Bat: Audi S4 Battery replacement
Bat: Is the metal jacket necessary on the Odyssey batteries?...
Bat: Odyssey batteries Accessories
Bat: Odyssey PC680MJT install
Bat: Odyssey PC925 Install - New Battery - PC925 Writeup
Bentley Publishers has a new S4: 2000-2002 CD 
Bipipe & Pippy Phenolic Spacers - install tips
BiPipe and have a two questions for the DIY crowd, use an o-ring assembly lube ?
BiPipe question for experts (DIY)
Boost: How much Boost (HP) can our engine handle?
Breaking in new engine
Cam: 2.8 Intake cams, how did you come up with the figures?
Cam: Anyone with ANY clue on how to install cams
Cam: New valve cover and cam switch seals (pix)
Cam: Replaced passenger side cam switch seal and valve cover gasket today.. 2.5hrs
Cam: Stock cam specs for the 2.7.
Car starts and stalls immediately.. has plenty of gas
Compression & leakdown test
DTC: Audi DTC Search
DTC: Audi DTC Table 
DTC: Audi DTC ziped
DTC: Secondary Air Injection System, Bank 1: air flow too low #17831
DTC: System too rich DTCs.
Fan: Aftermarket radiator fans.
Fan: What wire to short to make the fan come on - test ?
F-hose: and / or spider (PCV) hose upgrade anyone?
F-hose: Anyone have/see the new beather/spider hose?
F-hose: F-hose location?
F-hose: Home depot F-Hose substitute 
F-Hose: just got etka working. stupid question. is this the f hose?
F-hose: Upgrading the I.M. and Spider hose to the new style on a 2000 is it possible?
F-hose: Where is my F - hose?
Head: Ok, which seals/gaskets/caps go where? To fill the holes on my Pass side Head...
Head: S4 head volume (per cylinder)?
Head: Taking the head off
Head: Which gaskets should I replace when swapping heads...
Head: Will 3.0L 30v heads bolt right up to our motors? I know the 2.8 heads will..
Hood: Carbon Fiber Vented hoods and water
Hood: Need some input on vents for hoods.
Hood: Who here has stripped out the insulation under their hood?
How to remove the BOSCH MAF screen on 2.7T engine
IAT: '---- Lower IAT------ (Intake Air Temp)
IC: Are RS4 shrouds necessary?
IC: AWE Intercoolers (MarkP)
IC: AWE Tuning Air/Air Intercooler Kit install for 2000-04 Audi 2.7T
IC: AWE vs. RS4 IC's: install comparison
IC: Do RS4 ICs free float on our cars?
IC: EPL Dyno: AT curves from the K04'd cars at EPL....
IC: EPL Dyno: Follow up to MarkP's EPL Dyno IAT comparison. (Edit)
IC: How does heatsoak feel like?
IC: Installing Autospeed IC misters
IC: Intelligent InterCooler Misters
IC: Pics of the IC install on dyno day, and a little 996TT action (Major BWW)
IC: RS4 IC install - pic only (davenew)
IC: Updated ghettowerks ic fan mod pics
IC: When RS4 IC install goes wrong! AW, what is wrong here?
Intake: Any good ways to insulate the Inlet pipes
Intake: AWE ITG Cleaning instructions
Intake: Darin Intake With The "Tip Soul-Ja" Mod - Replaced My EVO (Hot Air) Intake With Stock Air Box
Intake: Darintake question: Does the cover go back on with a cone filter?
Intake: DIY 
Intake: DIY #2 
Intake: Has NE1 used the Phenolic Intake Spacers from ASP? Results? I saw them listed in...
Intake: How many stg3's have the bottom cut out of their airbox?
Intake: Intake Testing: Stock vs. EVO vs. EVO w/ no headlight (BWW)
Intake: what's the best place for having something thermal coated silver? thanks
Intake: What's word on heat wrapping hot parts during a stage3 install? 
Intake: X - 1 _ r a c e r  CF Intake
Intake: X - 1 _ r a c e r  CF Intake #2
Internal: Audi Engine Internals?
Internal: If you were going to build an engine from the ground up, what would be in it?
Internal: Ok... So let's talk about internals again... With the ASP kit at, 630chp/653Tq, on 93... Race Gas?
Lower temp thermo-switch for S4 after-run system
MAF: 1seriouspig's logs (v. positive deviation issues)
MAF: Hitachi - Bosch MAF wirering
MAF: how do i remove the line connected to the accdorin hose underneath?
MAF: Is there much difference between a rs4 airbox and the stock airbox?
MAF: Poll:  g/s peak for the stage II or II+ crowd.
MAF: Stg 3 gains using rs4 intake parts
MAF: What is the Max reading possible on a AWE KO4 MAF? Any Logs to show numbers ? 
Manifold: New Style Manifolds - AE AC BC or AK
Manifold: Part # for '01 or '02 intake manifold
Manifold: part numbers
Need advice on fixing faulty ambient temp sensor
PCV: Oil blow-by around breather hose... problem??
Pump: Afterrun coolant pump mod results
Pump: Auxiliary water pump replacement 
Pump: Electric after run coolant pump removal - w/ out removing the intake Manifold
Pump: Electric after run coolant pumps - old vs. new design
Spark: Changing spark plugs by zaphod
Spark: Correct order of cylinders on the S4 engine.
Spark: gap is 0.4-0.6mm, or 0.0157"-0.0236"
Spark: Misfires and plug gapping....
Spark: My Cylinder#1 spark plug hole is now stripped - How would you fix/address this? (Loose spark plug)
Spark: OEM spec tightening torque is 25nm
Spark: Spark Plugs were loose in cyl #1 & #2
TB: ALL timing marks when PISTON #1 is TDC?
TB: Does anyone know of if there is a correct DIY for timing belt replacment on AW
TB: It all makes sense now. (carnage inside)
TB: kit parts and recommendations
TB: Timing belt update: Truth is stranger than fiction.
TB: What is the verdict on pure motorsport Timing belt kit (TBKIT004A)?
TB: When doing the timing belt, pop off the cam pulleys or dont?
TBB: what size of clamps is used on samco tbb?
Vacume: Check valve discussion - valves part number: 078-611-933B
Vacume: Check valves part number: 078133701P
Vacume: lines Size and Type
Vacume: What is this little brass knob / gauge?
W8 Passat belly pan
W8/VW:  belly pan on S4? 
What a 2.7T motor weighs?
Zerex G05 coolant?
CatchCan: And...while the catch can topic is hot...take a look at what I found...(BWW!!!)
CatchCan: for those following catch can progress - heres around 500 miles of collected blowby from mine
CatchCan: Just finished my ghetto-fab catch can and more...
DV: Installing the Bailey Motorsport
Engine: AW gurus! Installed ASP stg3 fueling last night, car ran briefly then stalled...No codes. No start.
IC: AWE-->RS4-->DUH-->IPP graphs
IC: IPP Intercoolers versus Stock Intercoolers ! Part II ~ Cruise, In-Car Road Tests
IC: Stock versus IPP versus RS4 Intercoolers - Part I - The Bench Test
MAF: Consequences for running MAF-less and TCD?
MAF: My X-1 intake is reading lower peak values (247g/s vs 286g/s). Can anyone tell me why?
Oil: For you DIY oil cooler kit 
Pump:Auxiliary Coolant Pump Repair Kit TSB.
W/I: Boost Cooler (Water/Meth Injection) installed yesterday...I liiiikkeee it!
W/I: Graphs of CF, Ign Timing and IAT with and without the Boost Cooler (Water/Meth).
W/I: Water/Meth Injection...any results with fuel and timing optimized?
CatchCan: Catch can Installation