[torsen] Re: [audi20v] Fwd: Haldex AWD Club Tech Forum

[QSHIPQ at aol.com]

ex lister Brendan Rudack also inquired of the Haldex boys (Detroit SAE convention) regarding my question as to why Haldex is a coupling instead of a full time system.  Their response was that it was designed to be full time, but that audi elected to use it as a coupled system.

If one was to look hard at the CAN bus electronic interface on that TT, there is no question in my mind that one could add a locker button to that diff.  Until someone does that, it's 'synchro' (read part time 4wd), not quattro.

HTH

Scott Justusson
QSHIPQ Performance Tuning
Chicago
In a message dated 1/7/2005 10:28:19 AM Eastern Standard Time, Seth Parker <sgp at levitan.com> writes:

>FYI - More Haldex info:
>
>
>>From: "Johansson, Mats - Detroit USA" <Mats.Johansson at Haldex.com>
>>To: "'sgp at levitan.com '" <sgp at levitan.com>
>>Subject: RE: Spam: Haldex AWD Club Tech Forum
>>Date: Fri, 7 Jan 2005 08:46:35 -0600
>>
>>Hi Seth,
>>
>>Gen 1 was the first unit Haldex delivered and is also the unit that is in
>>the Audi TT.
>>
>>Gen 1 b was in the first units delivered to Volvo and is a combination of
>>gen 1 and gen 2 with only the pressure sensor added.
>>
>>Gen 2 have some more functionality such as a readback to be able to measure
>>exactly how much real torque is being transfered. It is also a sealed unit
>>that does not require any service or oil change.
>>
>>Gen 3 have some additional features such as Pre-X.
>>
>>Best Regards,
>>Mats Johansson
>>Haldex Traction Detroit
>
>
>The Haldex performance upgrade for the TT is mainly to give a more 
>aggressive tuning for the coupling to
>give some sportier handling.
>
>/Mats
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