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Thread: 50/50 haldex mod

  1. #81
    A3 TQS

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    Ok tbh I haven't checked the plug on the rear diff for signs of oil since changing the pump, but just didn't think it would be able to get through the pump plug on the controller and then through that to the rear. I found that thread when trying to diagnose my fault originally, it's a good thread

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  3. #82
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    A guy on the ASN track sessions today had a fully locked Haldex, he said it wheelhops when he corners at low speed, but it doesn't bother him, as it was what he was after!



    99' Audi S3(APY) - Brilliant Black Click>>>Going Sideways vid!
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  4. #83
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    Oh i wish i didnt read threads like this !
    IF you have a problem with the haldex system... What are the symptoms?
    Does it show on VAG COM?
    I have the Blue controller fitted to the car, A stock working one in a box at home and one fitted to a full rear subframe/ diff i bought from a TT that ive decided it "dodgy" just because i dont know its history
    Noggy Blue 2001 S3

    I ask questions because i change my mind so much. If i ask questions you have already covered... just leave it be?

  5. #84
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    Take you car onto some grass and see if the rear wheels spin

    and it should show up on vag com
    RIP S3dave/David Marshall stickers now available
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  6. #85
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    Oh it will drift ok
    Tried that a few times.
    No vag com faults other than brake position switch bloody things gone again
    Noggy Blue 2001 S3

    I ask questions because i change my mind so much. If i ask questions you have already covered... just leave it be?

  7. #86
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    That don't help the haldex so fix that first and see how it feels
    RIP S3dave/David Marshall stickers now available
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    Sparco Torino 2 sport seats, None resonated Milltek exhaust, Blue Haldex controller
    Adjustable FPR from 1-5 bar, 2 sets of Unused ARP 3/8 2000 rod bolts, relentless 200 cell cat pipe, Std AGU Crankshaft. Ported & Reconditioned Cylinder head service.

  8. #87
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    I have a haldex on the way
    TDIQ and StaceyS3 like this.
    RIP S3dave/David Marshall stickers now available
    FOR SALE
    Sparco Torino 2 sport seats, None resonated Milltek exhaust, Blue Haldex controller
    Adjustable FPR from 1-5 bar, 2 sets of Unused ARP 3/8 2000 rod bolts, relentless 200 cell cat pipe, Std AGU Crankshaft. Ported & Reconditioned Cylinder head service.

  9. #88
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    Great news. Fair play to whoever sent it!! Really looking forward to this!

  10. #89
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    You want to thank Gops
    jojo, Gops, kwistof and 1 others like this.
    RIP S3dave/David Marshall stickers now available
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    Sparco Torino 2 sport seats, None resonated Milltek exhaust, Blue Haldex controller
    Adjustable FPR from 1-5 bar, 2 sets of Unused ARP 3/8 2000 rod bolts, relentless 200 cell cat pipe, Std AGU Crankshaft. Ported & Reconditioned Cylinder head service.

  11. #90
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    Quote Originally Posted by jojo View Post
    A guy on the ASN track sessions today had a fully locked Haldex, he said it wheelhops when he corners at low speed, but it doesn't bother him, as it was what he was after!
    that would be me, i have the race controller which is engaged all the time and is still engaged under braking.
    Westy likes this.
    2003 S3 BAM 225 Dolphin grey, Silk Nappa Leather, Bose, Cruise control.

    Mods; custom code stage 1, S3 8P gear knob, pipercross panel filter, APR diverter valve, Forge TIP, Powerflex bushes, R32 rear anti roll bar, spacers F 15mm R 20mm, haldex race controller, Bilstein b12 pro kit, Porsche 996 turbo brakes.

  12. #91
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    Should receive it shortly! good thing I kept that! One thing I Want to do is open up the whole haldex! Mine isn't draining oil so ill swap it and dissect the old one!
    Quote Originally Posted by <tuffty/> View Post
    its either mapped or broken...

  13. #92
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    Quote Originally Posted by rhys1210 View Post
    that would be me, i have the race controller which is engaged all the time and is still engaged under braking.
    How long have you been running this and how much better is it over standard?
    m19lte likes this.
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  14. #93
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    Quote Originally Posted by Westy View Post
    How long have you been running this and how much better is it over standard?
    Since February, unlike the standard and blue upgrade (I did have the normal blue upgrade too) controllers you don't feel the rears kicking in and out, you just feel it push you round the corner as the rears are always engaged. I never liked the feeling of it engaging as it always felt it was later than i wanted it to kick the rears in.

    You can buy this controller from the TT shop if you phone them up, the one on their website is the competition upgrade, i have the race upgrade, both are made by BorgWarner (who own haldex).

    Basically what i have is the hpa competition controller, at the bottom of this page explains it. HPA Motorsports Inc. - Big Brake Kits

    In the UK the 2 upgrades they sell are competition (not toe be confused with hpa competition) and the race (same as hpa competition), these are both the same price.
    Westy and Whopper like this.
    2003 S3 BAM 225 Dolphin grey, Silk Nappa Leather, Bose, Cruise control.

    Mods; custom code stage 1, S3 8P gear knob, pipercross panel filter, APR diverter valve, Forge TIP, Powerflex bushes, R32 rear anti roll bar, spacers F 15mm R 20mm, haldex race controller, Bilstein b12 pro kit, Porsche 996 turbo brakes.

  15. #94
    Andrew@A.L.D's Avatar
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    Anyone have the wiring digram for the Haldex?
    RIP S3dave/David Marshall stickers now available
    FOR SALE
    Sparco Torino 2 sport seats, None resonated Milltek exhaust, Blue Haldex controller
    Adjustable FPR from 1-5 bar, 2 sets of Unused ARP 3/8 2000 rod bolts, relentless 200 cell cat pipe, Std AGU Crankshaft. Ported & Reconditioned Cylinder head service.

  16. #95
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    Andrew@A.L.D and StaceyS3 like this.

  17. #96
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    Does anyone have a haldex there not using that has this insert in it



    There are two types, I have the other one but not this one
    RIP S3dave/David Marshall stickers now available
    FOR SALE
    Sparco Torino 2 sport seats, None resonated Milltek exhaust, Blue Haldex controller
    Adjustable FPR from 1-5 bar, 2 sets of Unused ARP 3/8 2000 rod bolts, relentless 200 cell cat pipe, Std AGU Crankshaft. Ported & Reconditioned Cylinder head service.

  18. #97
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    Is there an easier way to tell without stripping it down Andrew?

  19. #98
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    You can get under the car with a mirror and light and have a look on top of the Haldex controller
    RIP S3dave/David Marshall stickers now available
    FOR SALE
    Sparco Torino 2 sport seats, None resonated Milltek exhaust, Blue Haldex controller
    Adjustable FPR from 1-5 bar, 2 sets of Unused ARP 3/8 2000 rod bolts, relentless 200 cell cat pipe, Std AGU Crankshaft. Ported & Reconditioned Cylinder head service.

  20. #99
    superkarl's Avatar
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    Mine are the circlip type. Must be the difference in facelift to pre fl.
    There are also esp and non esp controllers, wonder if thats the physical difference

  21. #100
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    I think the screw types are all preface lift

    My old one was preface lift and was sold to someone with a facelift esp and was told my controller fixed his problem?
    RIP S3dave/David Marshall stickers now available
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    Sparco Torino 2 sport seats, None resonated Milltek exhaust, Blue Haldex controller
    Adjustable FPR from 1-5 bar, 2 sets of Unused ARP 3/8 2000 rod bolts, relentless 200 cell cat pipe, Std AGU Crankshaft. Ported & Reconditioned Cylinder head service.

  22. #101
    jojo's Avatar
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    The difference from holding both units side by side is ones uses a metal gasket(per facelift) and one has a rubber seal, between the controller and actual Haldex.



    99' Audi S3(APY) - Brilliant Black Click>>>Going Sideways vid!
    You've got to have a laugh!



  23. #102
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    The controller 02D900554C (which is listed under pre and post facelift) superceeded over to 02D900554D anyway so now there is only one. No options on ESP or not too.

    The change over on the MK4 Golf from C to D was in 2003.
    Westy likes this.

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  24. #103
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    Anyway back to the topic I was asking

    Can anyone lend me the part in the pic above?
    RIP S3dave/David Marshall stickers now available
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    Sparco Torino 2 sport seats, None resonated Milltek exhaust, Blue Haldex controller
    Adjustable FPR from 1-5 bar, 2 sets of Unused ARP 3/8 2000 rod bolts, relentless 200 cell cat pipe, Std AGU Crankshaft. Ported & Reconditioned Cylinder head service.

  25. #104
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    Right guys to start with i'm going to make copies of the of the YHW insert and as soon as one is made i will give it to Gops

    The YHW one give 50/50 right out of the box so i can make ones like that or one that increases torque to the rear but not the full 50/50

    I'm also looking into electronics of the haldex and modifying the hydraulics with electronics to control the flow of the hydraulics to the diff

    Complicated but i do have a few ideas in my head and designing them also
    Dani_B19, Westy, TDIQ and 7 others like this.
    RIP S3dave/David Marshall stickers now available
    FOR SALE
    Sparco Torino 2 sport seats, None resonated Milltek exhaust, Blue Haldex controller
    Adjustable FPR from 1-5 bar, 2 sets of Unused ARP 3/8 2000 rod bolts, relentless 200 cell cat pipe, Std AGU Crankshaft. Ported & Reconditioned Cylinder head service.

  26. #105
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    The one joe gave me afterwards was pretty different.. Ill post a pic
    Quote Originally Posted by <tuffty/> View Post
    its either mapped or broken...

  27. #106
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    The one on the right is the one I sent to Andrew.. The one on the left is the one I put in the car..
    Attached Images Attached Images
    Quote Originally Posted by <tuffty/> View Post
    its either mapped or broken...

  28. #107
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    So your car has had pre and post controller's fitted in its life gops?
    Driving the most secretive S3 on ASN

  29. #108
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    Quote Originally Posted by Dani_B19 View Post
    So your car has had pre and post controller's fitted in its life gops?
    And a performance one which lives in a bag in my dining room atm!
    Westy likes this.



    99' Audi S3(APY) - Brilliant Black Click>>>Going Sideways vid!
    You've got to have a laugh!



  30. #109
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    And whys it in a bag and not on your car sir?
    Driving the most secretive S3 on ASN

  31. #110
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    Quote Originally Posted by Dani_B19 View Post
    And whys it in a bag and not on your car sir?
    It's going on very soon, as my current one is broke.



    99' Audi S3(APY) - Brilliant Black Click>>>Going Sideways vid!
    You've got to have a laugh!



  32. #111
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    He keeps lots of parts for his car..not on his car
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  33. #112
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    When will this be ready for sale?

  34. #113
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    The inserts will be soon but it will only be the ones with the cir clip ones first and not the screw in one as i've yet to get hold of one to measure up.

    If i can get numbers i will do group buy on here maybe?
    phil miller likes this.
    RIP S3dave/David Marshall stickers now available
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    Sparco Torino 2 sport seats, None resonated Milltek exhaust, Blue Haldex controller
    Adjustable FPR from 1-5 bar, 2 sets of Unused ARP 3/8 2000 rod bolts, relentless 200 cell cat pipe, Std AGU Crankshaft. Ported & Reconditioned Cylinder head service.

  35. #114
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    Quote Originally Posted by Andrew@A.L.D View Post
    The inserts will be soon but it will only be the ones with the cir clip ones first and not the screw in one as i've yet to get hold of one to measure up.

    If i can get numbers i will do group buy on here maybe?
    Be nice to see some test results from a few cars before everyone goes wading in. I assume Gops will be able to comment shortly once he gets his controller back and onto his car?
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  36. #115
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    This needs to be switchable between fixed 50/50 and standard, and it will sell loads!
    Pedrosousa likes this.



    99' Audi S3(APY) - Brilliant Black Click>>>Going Sideways vid!
    You've got to have a laugh!



  37. #116
    Andrew@A.L.D's Avatar
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    Quote Originally Posted by jojo View Post
    This needs to be switchable between fixed 50/50 and standard, and it will sell loads!
    Thats something i'm working on but its not as simple as you think
    RIP S3dave/David Marshall stickers now available
    FOR SALE
    Sparco Torino 2 sport seats, None resonated Milltek exhaust, Blue Haldex controller
    Adjustable FPR from 1-5 bar, 2 sets of Unused ARP 3/8 2000 rod bolts, relentless 200 cell cat pipe, Std AGU Crankshaft. Ported & Reconditioned Cylinder head service.

  38. #117
    Andrew@A.L.D's Avatar
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    Quote Originally Posted by jojo View Post
    This needs to be switchable between fixed 50/50 and standard, and it will sell loads!
    Now i may have found a way and i'm buzzing now
    jojo, Gops and StaceyS3 like this.
    RIP S3dave/David Marshall stickers now available
    FOR SALE
    Sparco Torino 2 sport seats, None resonated Milltek exhaust, Blue Haldex controller
    Adjustable FPR from 1-5 bar, 2 sets of Unused ARP 3/8 2000 rod bolts, relentless 200 cell cat pipe, Std AGU Crankshaft. Ported & Reconditioned Cylinder head service.

  39. #118
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    So the circlips for facelifts?
    Driving the most secretive S3 on ASN

  40. #119
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    Quote Originally Posted by Dani_B19 View Post
    So the circlips for facelifts?
    No mate. You will need the threaded one
    RIP S3dave/David Marshall stickers now available
    FOR SALE
    Sparco Torino 2 sport seats, None resonated Milltek exhaust, Blue Haldex controller
    Adjustable FPR from 1-5 bar, 2 sets of Unused ARP 3/8 2000 rod bolts, relentless 200 cell cat pipe, Std AGU Crankshaft. Ported & Reconditioned Cylinder head service.

  41. #120
    chaz20vt's Avatar
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    So mines a 1999 s3 so pre facelift so it that cir clip ones

 

 
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