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  1. #1

    Haldex permanent awd?

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    Hi all,

    I watched humble mechanics video on how haldex worked and he mentioned some guy in Italy built a clutch pack that eliminates the friction discs and makes it one solid unit, essentially transferring power from driveshaft to diff directly, bypassing the haldex pump and controller unit. Does anybody know what the company is called and how much power (%) would actually be sent to the back after the mod if it exists. I'm asking for a volvo with haldex 3 but some Audis have haldex so might have knowledge to share on the forum. Obviously I have to worry about angle gear bs being volvo and find a way around that too. Thanks for any info

  2. #2
    Veteran Member Three Rings
    Join Date
    Jan 23 2014
    AZ Member #
    139941
    My Garage
    '13 Touareg TDI - '08 RS4 Mug/Ti
    Location
    Derby City

    Send Charles (The humble mechanic) a message on IG, he'll respond.

  3. #3
    Quote Originally Posted by 87vr6 View Post
    Send Charles (The humble mechanic) a message on IG, he'll respond.
    I messaged on ig about a week ago based on what you said, no reply as of yet so I guess he doesn't know anymore, had replied to me before regarding other things

  4. #4
    Veteran Member Four Rings
    Join Date
    Mar 01 2006
    AZ Member #
    10621
    Location
    Kitchener, ON

    50% or get a Haldex tune, save money and allow for 100% to save gas when you cruise on the highway
    2023 Audi S3 / Stronic // Daytona Grey

    Past
    2018 VW Golf R // 6 MT // Deep Black Pearl
    2010 Audi S4 // Stronic // Phantom Black
    2001 Audi S4 // 6 MT // Light Silver Metallic

  5. #5
    Established Member Two Rings
    Join Date
    Jul 30 2022
    AZ Member #
    772692
    Location
    San Francisco

    When editing your custom drive mode you can set Quattro to Dynamic, Comfort, Automatic. Does anyone know what that does?

  6. #6
    Veteran Member Three Rings XMetal's Avatar
    Join Date
    Nov 02 2017
    AZ Member #
    409300
    Location
    CA

    I believed it only setup how quickly haldex reacts. For example, when I have it in Automatic or Comfort mode, I can feel the front slips a bit before power is sent to the rear, even on dry surface - almost felt like a FWD. However, when I have it in Dynamic, I hardly get any front wheel slip, even on wet surfaces. Now, my individual setup always have Quattro in Dynamic.
    2018 Audi S3 Premium Plus
    Navarra Blue Metallic/Magma Red - Technology, Dynamic, S Sport, Black Optic, Resonator Delete, Unitronic Turbo Inlet, EQT Stage1 ECU/TCU

  7. #7
    Senior Member Two Rings
    Join Date
    Apr 03 2020
    AZ Member #
    543883
    Location
    FL

    Wouldn’t an aftermarket Haldex controller that allows you to override OEM behavior a better option instead of permanently locking the rear? Unless it for a race only car and that’s exactly what is needed.

    Anyway HPA makes one that works for Audis.


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  8. #8
    Senior Member Three Rings 8STTRS's Avatar
    Join Date
    Jul 28 2021
    AZ Member #
    614053
    Location
    Navarre, Florida

    There's nothing out there that will make it a true mechanical connection outside of what seems to be described up top in the OP. Syvecs makes a controller that can allow for more than 50% of the OEM torque to reach the rear wheels but, it can't change the actual nature of the setup. To that end, it also exacerbates the issues that Haldex has and as such, increased wear or breakage is typically seen. Going down this road begins to look really appealing because I think that some folks still don't know that you could make 1000whp but only have 172-brake torque reach the rear wheels due to the software/hardware limitations involved in the Haldex controller and the surrounding components. Hank, from Iroz, has covered this many times. So, with more than 50% of the OEM torque reaching the rear wheels, you could effectively get more potent launches, provided the components involved can handle it. Look at all the high powered RS3's and TT RS cars out there breaking driveshafts left and right trying to get power to go to the rear.

    This is largely why I have refused to get a Haldex controller for my car. Software simply telling the system to increase clamping pressures and to do so well beyond their rated figures, tends to end in failure. I've always felt that the true solution to this is a mechanical one, starting from the transmission on back, effectively removing Haldex altogether.
    2018 Audi TT RS
    JDY Next Gen 6670 coming soon (shooting for 975-1kwhp on low boost).

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