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  1. #1
    Audi Dynamik's Avatar
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    Question Why will my Car not work on Rolling Road ?

    Hello,

    I attended the Yorkshire Rolling Road Event today in my 2011 A4 2.0tfsi Dynamik Quattro (Revo Remap)
    I got onto the 4wd Rolling Road and for some strange reason my Front wheels would not spin they were attempting to move but could not, the Rear Wheels only span.
    I still want to attend a Rolling Road again sometime to get some figures for my car but can somebody tell me, Why did my front wheels not spin on my Quattro A4 on the Rolling Road ?

    Any input welcome.

    Thanks
    Her 2011 Limited Edition A4 Dynamik 2.0 Tfsi quattro 211 BHP Saloon & Mine 2013 Bmw 535D M Sport 313 Bhp 630nm.

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  3. #2
    Jenkobenko's Avatar
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    Isnt Quattro these days intelligent? so it will drive with only 2 wheels until it senses it needs the 4 aka. you thrash it about?

  4. #3
    Audi Dynamik's Avatar
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    It is a Quattro but apparently the a4 is a permanent 4wd and has not got a haldex.
    Her 2011 Limited Edition A4 Dynamik 2.0 Tfsi quattro 211 BHP Saloon & Mine 2013 Bmw 535D M Sport 313 Bhp 630nm.

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  5. #4
    riggssuzuki's Avatar
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    Damn. I was waiting with baited breath for the results!!! You are quite correct the A4 does not have the haldex. Cant think why you couldnt run if it was a 4 wheel rolling road. Did the operator not have any ideas?


    2011 A4 2.0 TFSI Quattro Dynamik. IBIS White.

  6. #5
    Audi Dynamik's Avatar
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    I know sorry pal ! He had no idea why ? They checked for fuses and things but no luck. Just wouldn't go.
    Her 2011 Limited Edition A4 Dynamik 2.0 Tfsi quattro 211 BHP Saloon & Mine 2013 Bmw 535D M Sport 313 Bhp 630nm.

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  7. #6
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    edl kicking in, prob need to remove abd fuse to cure it

  8. #7
    Audi Dynamik's Avatar
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    Quote Originally Posted by Byzan Pics View Post
    edl kicking in, prob need to remove abd fuse to cure it
    please can you explain this to me ?
    Her 2011 Limited Edition A4 Dynamik 2.0 Tfsi quattro 211 BHP Saloon & Mine 2013 Bmw 535D M Sport 313 Bhp 630nm.

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  9. #8
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    Why will my Car not work on Rolling Road ?

    Never known a Quattro needing fuse removal.

    Worst might be to disable the ESP - did they try this? I've never had any further mechanical or electrical modifications required to run.

  10. #9
    Audi Dynamik's Avatar
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    A few of the cars which were there like s3's Quattro needed there fuse removing for it to work but this was not required for the A4. They tried it with esp on and off. The front wheels were attempting to spin but couldn't and the back ones were running but the back right one were running faster than the back left.
    Her 2011 Limited Edition A4 Dynamik 2.0 Tfsi quattro 211 BHP Saloon & Mine 2013 Bmw 535D M Sport 313 Bhp 630nm.

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  11. #10
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    Why will my Car not work on Rolling Road ?

    Sorry, by Quattro I was not including the electronic jiggery used on A3 etc. it simply becomes fwd with Haldex disabled.

    Any other permanent AWD cars there which were successful?

  12. #11
    Audi Dynamik's Avatar
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    Yeah, Audi S2, Audi S3's.
    Her 2011 Limited Edition A4 Dynamik 2.0 Tfsi quattro 211 BHP Saloon & Mine 2013 Bmw 535D M Sport 313 Bhp 630nm.

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  13. #12
    michaelg1001's Avatar
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    My B5 S4 and the B4 S2 I think were the only permanent 4wd ones that ran successfully. The only S3s that ran were 8Ls

  14. #13
    _G_
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    pull the abs fuse it will disable the edl.. still wondering if it is low differential fluid or a wheel speed sensor fault though... hmmm
    could always use VCDS to perm disable EDL and ASR but leave ABS on.

  15. #14
    Audi Dynamik's Avatar
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    Right thanks for the advice everyone
    Her 2011 Limited Edition A4 Dynamik 2.0 Tfsi quattro 211 BHP Saloon & Mine 2013 Bmw 535D M Sport 313 Bhp 630nm.

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  16. #15
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    Any updates?


    2011 A4 2.0 TFSI Quattro Dynamik. IBIS White.

  17. #16
    Audi Dynamik's Avatar
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    Quote Originally Posted by riggssuzuki View Post
    Any updates?
    The Electronic Differential Lock (EDL) permits smooth, comfortable starts on road surfaces that do not have a uniform coefficient of friction. If a wheel starts to spin, EDL brakes it as necessary so that power is transmitted to the wheel with the better traction. EDL reduces tire wear and works up to about 25 mph (quattro®: up to about 50 mph). EDL is part of the Electronic Stabilization Program (ESP®) and the Traction control (ASR).

    What i guess is now that because the Car has edl the abs fuse needs to be taken out for it to work successfully on the Rolling Road or use a VCDS to disable the edl meanwhile it is running on the Rolling Road.


    Her 2011 Limited Edition A4 Dynamik 2.0 Tfsi quattro 211 BHP Saloon & Mine 2013 Bmw 535D M Sport 313 Bhp 630nm.

    Reputation given for the best answer.



  18. #17
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    I am sure i read somewhere that for a true 4x4 dyno the rollers front to rear need to have a mechanical link to take out any effects of front rear bias and to truly imitate a normal road condition as surly if you have a normal rear bias and in effect different resistance front to rear all power will be sent to the slower turning axle.
    V8 baby... oh yeah

  19. #18
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    V8 baby... oh yeah

 

 

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