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Best way to launch Haldex

Discussion in 'A3/S3/Sportback (8P Chassis)' started by Muneeb S3, Sep 6, 2009.

  1. Muneeb S3
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    Muneeb S3 Member

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    [Sep 6, 2009]
    Hi Guys,

    Going to be hitting the 1/4 mile track in the next couple of weeks with a few of my mates. Going to be up against a TTS, tuned ED30, new RS, Cupra R, Z4 3.0...so should be interesting!

    Going to hopefully have the car Revo'd before then but wanted to ask what the best way is to launch with Haldex? Last time I ran the 1/4 mile my 60ft times were poor and the best I could manage was 14.4.

    Any tips would be greatful!

    Thanks
    #1
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  3. kaz219
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    kaz219 Active Member VCDS Map User

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    [Sep 7, 2009]
    is yours a dsg? if so, esp off, left foot on brake, into S or manual mode, rev and goooo!
    #2
  4. paddy
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    paddy Audi=No fault code, no idea

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    [Sep 7, 2009]
    I really don't think it would be a good idea to use LC on an S3 + revo. I can hear the clutch exploding from here :blush:
    #3
  5. Muneeb S3
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    Muneeb S3 Member

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    [Sep 7, 2009]
    no DSG. Standard manual
    #4
  6. A4_DTM
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    A4_DTM Member

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    [Sep 7, 2009]
    1. Throw everything you can from the car out (rear seats, front seat, spare tyre ... )
    2. drop clutch at 5000 rpm
    Last edited: Sep 7, 2009
    #5
  7. mrgicm
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    mrgicm Phantom black S3/

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    [Sep 7, 2009]
    http://www.youtube.com/watch?v=KMPmCCA4kvE

    the best way to launch is to apply the handbrake just a little bit, enough to hold the diff tense (otherwise the initial hit on the diff is too strong and you can break it) and than pump the revs up to 4100-4200 and than at the same time release the handbrake and the clutch, and you can see the result.
    #6
  8. KeepItTidy
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    KeepItTidy Member

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    [Sep 7, 2009]
    this doesnt work for me :(
    No matter what revs I get the car to, if i drop the clutch, the car just dies, revs drop out of boost and have to build up again.

    Managed my quickest start the other day, revs at +-4200 and just slowly let clutch out until its biting,then drop the rest of it.
    Seems to give me a good hard launch. Dont know if its perfect though
    #7
  9. A4_DTM
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    A4_DTM Member

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    [Sep 7, 2009]
    Unfortunately with stock S3 there is no way to launch the car, it has torque limiter in 1st gear
    #8
  10. Matt_S
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    Matt_S Member

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    [Sep 7, 2009]
    so get out of first gear asap!

    as said, use the handbrake to hold on the line.

    if your going for times, you can launch when your ready, dont rush it off the greens, just to beat the inevitable saxo next to you.
    #9
  11. Muneeb S3
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    Muneeb S3 Member

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    [Sep 7, 2009]
    Good idea. Will launch when I am ready
    #10
  12. Rabbit222
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    Rabbit222 Active Member

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    [Sep 7, 2009]
    Blip the throttle at 4000rpm and let it rip.
    #11
  13. freegeek
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    freegeek Member

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    [Sep 7, 2009]
    Not exactly the same, but in my TT i rev at 5000, then at launch I slip the clutch trying to keep the revs at about 5000 till fully engaged so that I don't get bogged down.

    The result is this 0-60 time after quite a bit of practice.

    [​IMG]
    #12
  14. RobinA3
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    RobinA3 Well-Known Member

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    [Sep 7, 2009]
    I got a 14.44secs quarter at the Pod in the A3 last year.

    Turn off the ESP.
    Get 4000rpm on the boil.
    Bring the clutch in so its biting - just.
    Mash the throttle and let the Quattro do its thing!
    #13
  15. kkp0897
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    kkp0897 Member

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    [Sep 9, 2009]
    Don't forget to get someone to film the event and throw it up on youtube for the benefit of all us users.
    #14
  16. Dandle
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    Dandle Member

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    [Sep 9, 2009]
    I'm pretty sure the haldex controller has an input from the handbrake and won't pre engage the clutch if it has a handbrake on signal. Which would mean only the front wheels are getting power until the handbrake is fully down.

    The best way I found of launching was as someone above said, lots of revs and slipping the clutch so the engine doesn't bog down.
    #15
  17. Boydie
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    Boydie Boycie VCDS Map User

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    [Sep 9, 2009]
    Does a revo remap not remove the torque limiter in first gear?

    where do you get that digi pod from???
    #16
  18. freegeek
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    freegeek Member

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    [Sep 9, 2009]
    I made it myself from blood sweat and tears, but you can also get them from racediagnostics.com

    in action here

    http://www.youtube.com/watch?v=bGoONTn1Y_w
    #17
  19. A4_DTM
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    A4_DTM Member

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    [Sep 9, 2009]
    That is the point, to spinn the front wheels and than rear because on ruff surfaces there is no way to spinn all 4 wheels with less then 400 HP .. And this is proven the best start, try it ;)
    #18

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