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  1. #1
    Veteran Member Four Rings gointoscott's Avatar
    Join Date
    Jan 26 2006
    AZ Member #
    9931
    My Garage
    2001 Audi S4
    Location
    Milwaukee, WI

    ECU compatibility

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    Will a A box from a 2000 B5S4 work in a 2001.5 B5S4 that has a M box?

    Both are 6 spd manual transmissions

    Anyone know?

    Thanks
    Original K03's, Ecodes, H&R Coilovers, Inmotion Chip/MBC, Piggies

  2. #2
    Veteran Member Four Rings mholme's Avatar
    Join Date
    Jan 29 2007
    AZ Member #
    15226
    My Garage
    08 S4 00 S4
    Location
    MD

    Re: ECU compatibility

    A box uses Bosch MAF, M box uses Hitachi MAF. Plus, A box doesn't have ESP.
    08 S4- Stock SOLD

    00 S4-APR 93 Piggies Custom True Dual exhaust AWE DTS ECS/Bilstein Coilovers 710N's Samco TBB Omori 52mm boost gauge SOLD

  3. #3
    Veteran Member Four Rings YZracer's Avatar
    Join Date
    Sep 20 2005
    AZ Member #
    8047
    Location
    Scottsdale, AZ

    Re: ECU compatibility

    it'll work if you switch the MAF I believe. Also, with VAG-Com people have reprogrammed their ECU's.
    CURRENT TOY
    2013 TT-RS Ibis White - Stock for now......
    Sold:
    2010 B8 S4 Phantom Black: Stasis Touring Suspension Kit, APR Pulley, APR 93 Octane Pulley Tune, APR Full Carbonio Intake
    Parted and Torn down:
    2000 Black 6spd S4
    SSP Tuned PJK04 Stage 3
    Burned:
    2000 S4 Tiptronic (B5)

  4. #4
    Veteran Member Four Rings gointoscott's Avatar
    Join Date
    Jan 26 2006
    AZ Member #
    9931
    My Garage
    2001 Audi S4
    Location
    Milwaukee, WI

    Re: ECU compatibility

    Blah, I was hoping just switching out ecu's would work. I had a feeling the esp would be a problem because I knew 00's dont have esp

    I have vag-com, but dont know how to reprogram that much and dont want to screw anything up.

    Anyone have a M box that has either a giac or APR chip for stage 2 car that lives in milwuakee area that I could try running in my car to see how it pulls?

    I have the inmotionusa chip and want to compare what other chips run compared t what I have.
    Original K03's, Ecodes, H&R Coilovers, Inmotion Chip/MBC, Piggies

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