• Paris 2008: Full Video and Photo Galleries Online
  • World Debut: Audi A1 Sportback concept
  • Now Supercharged: 2010 Audi S4 Sedan & Avant
  • B6 S4 Forum || B7 S4 Forum || B7 RS 4 Forum

  • [Thread] [Post Followup] [Post Picture] [Search Forums] [S4 / RS4 (B5 Platform) Discussion]
    Stock FATS, M-box: 6.1 (plus lots of graphs!)
    Posted by: Pie4Foo on 2005-06-01 09:36:39
    Account #: 57452

    First, the basics:

    2001.5, 6-Speed (M-Box)
    100% stock
    93 Octane
    65F, high humidity
    1000 feet
    Just myself

    Average of three runs in three different locations, seperated by a few minutes each: 6.06, 6.06, 6.05. Net: 6.06, or ~6.1.

    When I first started capturing my FATS times a few weeks ago, I was surprised at the results considering what I'd read and my recent dyno results. I consulted with some wizened old veterans, re-logged the data multiple times, and re-ran the tests at several different locations. As long as the car was still breathing relatively cool air (and timing wasn't being pulled by the ECU), I found myself getting very consistent results.

    I'll let the pretty pictures do the talking:

    FATS Run #1

    FATS Run #2

    FATS Run #3

    Boost in Absolute mBar

    Note that when I converted to PSI, I subtracted the reported vacuum at idle of 970 mBar:

    Boost in calculated PSI

    MAF

    Timing

    Big thanks to Nye, Doc, and Darin for their email consultation, as well as Mark P for his idiot-proof FATS calculator.

    I'm encouraged by the results - now if only I could be convinced to mod the car! :)

    2008 Track days: Mid-Ohio, Talladega, VIR, Barber

    Thread:

    You must be registered and logged in to post. Please select an option:

    Login with existing account
    Create a new account




    Terms of Use | Copyright © 1996-2008 by AudiWorld. All rights reserved.