1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

IS IT POSSIBLE TO DISCONECT THE REAR DIFFERENTIAL FROM MY 2008 S3?

Discussion in 'A3/S3/Sportback (8P Chassis)' started by beto, Sep 25, 2010.

  1. beto
    Offline

    beto New Member

    Joined:
    Nov 7, 2009
    Messages:
    3
    Likes Received:
    0
    Hi guys, I have a 2008 Audi S3 2.0TFSI with some mods and I would like to know if it's possible to "disengage" the rear differential to test it in a 2wd dyno.

    Has anyone done this in this car?
    I would really appreciate all the help that you can offer me.

    thanks. :thumbsup:
    #1
  2. mitch78
    Offline

    mitch78 Active Member

    Joined:
    Mar 29, 2007
    Messages:
    2,345
    Likes Received:
    3
    Just pull out the fuse for the Haldex.
    #2
  3. heeman10
    Offline

    heeman10 Audi driver since Dec 08

    Joined:
    Dec 19, 2008
    Messages:
    374
    Likes Received:
    0
    Fuse-pulling is a scary practice. I would never let a car on my rolling road with "the fuse pulled". A number of owners tried to press me into allowing it, but it's simply not bright. If any electrical malfunction were to occur that closed the circuit and transmitted torque to the rear wheels, the owner would most likely swallow his words when his car hurled itself off the rollers.

    Yes, it is a case of "Yeah right, you'd have to be well unlucky for that to happen", but it's not a risk I would be willing to take. Risk/chance/luck - none of these things mean definite yes or definite no. If you disconnect the rear prop, you will never run the risk of your car deciding to make a quick exit through the front wall of the dyno cell!
    Last edited: Sep 25, 2010
    #3
  4. netr
    Offline

    netr Member

    Joined:
    Jun 9, 2010
    Messages:
    49
    Likes Received:
    0
    nicely put
    #4
  5. RAPS3
    Offline

    RAPS3 Well-Known Member

    Joined:
    Jan 14, 2003
    Messages:
    1,100
    Likes Received:
    79
    It's not just a case of pulling the fuse, you need to turn off certain sensors in Vagcom, speed sensors to the rear wheels and others i beleive.

    I know someone who had their S3 RR'd on a 2WD RR recently without issue.
    #5

Share This Page