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Quick Audi (B5) S4 FAQ:Q: What are some differences between B5 platform Audi S4 build dates? A: Audi seems to roll out updates gradually on their cars, so no list may be totally accurate. For example, you may have a M-box with the older shifter stalk. Also note that S4s were released in Europe before North America. 09/99 (Y2000 initial production, A-box ECU for manual, f-hose, possibly aluminium uprights on suspension, original badge) 06/00 (Y2001, H-box ECU for manual, ESP controller, possibly steel uprights) 10/00 (Y2001.5, M-box ECU for manual, revised turbos, no f-hose, revised TBB, different oil inlet lines, possibly changed shifter stalk, polished aluminum mirrors w/ sport package, new badge, Avant model) 06/01 (Y2002, T-box ECU for manual) Tiptronics have a different lettering sequence for their ECUs. Q: How do I tell what ECU box I have? A: The best way to be sure about which box you have is to either a) look at the label on your ECU or b) hook up a VAG tool and see what number it returns. For example, a reading of 551M would mean M-box (for both methods). Q: What does my VIN mean? A: Meanings by digit: 1) W = Germany, 2) A = Audi, 3) U = Passenger Car, 4) Series: R, 5) Engine D, 6) Restraint System, 7&8) Model Number (8D = A4/S4), 9) Check Digit, 10) Model Year (Y = 2000, 1 = 2001, 2 = 2002), 11) Assembly Plant, 12-17) Serial Number Q: How do I remove my ECU? A: Audi Performance and Racing (APR) has good instructions here [PDF]. Be gentle! Q: Which aftermarket ECU chip is the best? A: This question is the start of many a flamewar. Please STFA!! Q: What does WOT stand for? A: Wide Open Throttle Q: What's the part number for the BMW M3 spoiler? A: 51-71-7-893-671. Q: What are some useful datablocks to log with VAG-COM? A: Torque (120), Boost (115), Air Flow (003). Q: How do you calculate HP from Torque? A: 1.0 NM = 0.74 FT/LBS. HP = (TORQUE X RPM) / 5252. Q: How many quarts of oil does a S4 hold? A: About 6.5 to 7.5. Q: What other Audi vehicles utilize the 2.7 Liter 30 Valve V6 Turbo engine? A: You can find variations on the engine used in the S4 in the Audi (B5) RS4 (w/ K04 turbos stock), (C5) A6 2.7T, and Allroad 2.7T. Q: What engine will be in the B6 platform future S4? A: 4.2L V8 at around 340hp. See here for .more information. The New S4 at Audiworld The New A3 at Kak.net Q: How many Audi S4 2.7L Biturbos were imported into the United States? (Production total for USA) A: From S-cars.org:
Q: Where do I get S4 apparel and shirts? A:  Liquidcrack Apparel |
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Useful Files for your Audi:
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s4biturbo.com |
Frequently Asked Questions |
DTC Engine Code Lookup |
Timeslips |
Links |
Liquidcrack Shirts and Apparel |
Vanguard Performance Exhausts |
VW Exhausts
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got news? timeslips? links? email me @ golem@s4biturbo.com |