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Heel and toe not possible on DBW?

Last post Sat, Jul 4 2009 12:42 PM by Imagewerx. 13 replies.
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  • Tue, Oct 10 2006 5:48 AM Heel and toe not possible on DBW?

    shiuming
    • Joined on Thu, May 19 2005
    • Posts 8,518
    • Top 25 Contributor

    Well that's what I've read countless times on here, but I've done the brake-while-on-throttle experiment in mine and the revs do not drop at all.

    In any case though I'm just rubbish and couldn't heel and toe to save my life Sad

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  • Tue, Oct 10 2006 6:03 AM Re: Heel and toe not possible on DBW?

    Pat
    Golf IV GTI 1.8T 20v AUM 150PS
    • Joined on Fri, Apr 19 2002
    • Location: Outer Manchester
    • Posts 5,012
    • Top 50 Contributor
    shiuming:

    Well that's what I've read countless times on here, but I've done the brake-while-on-throttle experiment in mine and the revs do not drop at all.

    no it doesn't work on my car either

  • Tue, Oct 10 2006 6:18 AM Re: Heel and toe not possible on DBW?

    The Walrus
    • Joined on Fri, Oct 11 2002
    • Location: Way down deep in the middle of the Congo
    • Posts 3,413
    • Top 75 Contributor

    heel and toeing is fine left foot braking is not you can blip the throttle as you are down change otherwise your car would not let you rev the car with the car in neutral.

    If you are refereing to left foot braking then no the car will not allow it as you are trying to apply accelerative force whilst braking i.e. trying to bring the nose back into line but applying throttle and brake at the same time so as not to lose load on the driving wheels.

    I hope that makes sense so keep heel and toeing I do and love it get a nice pop and bang or flame if I am clumsy.

    But shiuming from what Dannyboy tells me that is the least of your problems with your  driving Stick out tongue  focus on getting your entry speed and line correct. On modern cars it is not required your clucth is more than capable, you will have used it when sychromesh was not around as it smoothed the downshifts and kept the car balanced whilst braking rather than transfering to much weight to the rear whilst braking and down shifting.

    HTH and is not to confusing. 

    PFTM !
  • Tue, Oct 10 2006 6:20 AM Re: Heel and toe not possible on DBW?

    rfsteel
    Golf IV V5 2.3 20v 170PS
    • Joined on Tue, Oct 1 2002
    • Location: Surrey, UK/Melbourne Australia
    • Posts 2,740
    • Top 150 Contributor
    I have no problem in my DBW heel and toeing it round a race track.

    V5 170 20V AmD Remaped to 190BHp
    Eibach ARBs
    H&R Coilovers droped 35mm
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  • Tue, Oct 10 2006 6:24 AM Re: Heel and toe not possible on DBW?

    The Walrus
    • Joined on Fri, Oct 11 2002
    • Location: Way down deep in the middle of the Congo
    • Posts 3,413
    • Top 75 Contributor

    Also shiuming your car is on a throttle cable if I remember correctly so that will explain it.

    Try driving in a straight line then break with your left foot and keep pressure on the accelartor with your right then if your engine does not die you will know if it does it or not.

    Also you are normally only going to dab the breaks say in a corner to move the weight transfer with left foot breaking not jumped on them.

    PFTM !
  • Tue, Oct 10 2006 6:26 AM Re: Heel and toe not possible on DBW?

    talk-torque
    Golf V GT TDI 2.0 140PS
    • Joined on Mon, Jul 22 2002
    • Location: Scarborough & Lincoln UK
    • Posts 1,596
    • Top 500 Contributor

    The system will allow the throttle blip necessary to heel and toe, which I do all the time, out of habit, being an old git. What it won't allow you to do is left foot braking - ie. use the foot brake to induce oversteer, whilst cornering on hard throttle - a rather brutal (IMHO) rallying technique.

    The cut off is quite difficult to induce, but I have done enough to prove it to myself - nearly going through the windscreen in the process! The weight transfer, due to braking, throws you forward harder onto the brake pedal! And yes, the throttle cuts off.

    Roger.

    2002-2005 Mkiv GTi 150PD
    2005-2009 Mkv GTTDi 140
    2009 Audi TT 2.0T S-Line SE Monza Silver with Titanium finish 19" RS4's.
  • Tue, Oct 10 2006 6:28 AM Re: Heel and toe not possible on DBW?

    sk4tec
    Golf IV GTI 1.9 ARL 150PS
    • Joined on Wed, Jan 19 2005
    • Location: Reading, South East
    • Posts 2,093
    • Top 150 Contributor

    I never got heel and toe until I twigged that you can't heel and toe from 5th to 2nd. Its too hard to antcipate the difference in engine RPM from such a difference in gears. Its easy if you go down sequentially but u need to get all your gear changes done before you need to accelerate out.

    I'm not saying this is proper heel and toe but its what I have learnt.

    I think the original story might have come from when Audi had well reported poblems in the US in the 80's with cars that wouldn't stop - I can't remember the details. 


    Last car: Golf MK IV TDi 150
    Current Car: Mazda 3 Sport. What do you mean you've never heard of it? Its a distant relation of the 3 MPS!!
  • Tue, Oct 10 2006 6:32 AM Re: Heel and toe not possible on DBW?

    shtu
    • Joined on Mon, Jun 2 2003
    • Location: Scotland
    • Posts 1,204
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    Heel and toe possible - maybe.

    Left Foot Braking - no.

    Reason is that the sequence is like this.

    Accelerator depressed, no braking - as normal.
    Brake and accelerator depressed - rpm drops to idle.
    Release brake, accelerator (still) depressed - rpm stays at idle.
    Release and reapply accelerator - rpm rise as required.

    The rpm drop to idle until the accelerator pedal is "reset" by releasing and reapplying, so LFB (where the accelerator is never released) won't work.

    For front drive cars, LFB is a more useful technique than HAT. HAT is of much more benefit in rear-drive cars, and is used to prevent engine braking from locking the rear wheels. Under heavy braking, the forward weight transfer leaves the rear wheels light, and more likely to lock as a lower gear is selected.(and to help save damage\increased wear to the gearbox and drivetrain by reducing shock loading)

    A front-drive car has it's driven wheels loaded heavily under braking, so there's less risk of locking a wheel on downchanges.

  • Sat, Jul 4 2009 7:32 AM Re: Heel and toe not possible on DBW?

    rockmonkey69
    Golf IV V6 4motion 2.8 24v AUE Supercharged 315PS
    • Joined on Fri, May 1 2009
    • Location: Reading
    • Posts 183
    • Not Ranked

     I suppose technically it is possible to heel and toe or any other driving technique for that matter, it just isn't nice and it does not work as well.

    For heel and toe DBW is awful, the response to the throttle body is too slow, I suppose the signal can be speeded up to the throttle body but as it is - standard, there is a major delay and really you dont wanna be slamming your feet through the floor for a couple of hours waiting for it to blip. I certainly do not take longer than it takes for a gear's throw to blip, kind of pointless otherwise. So I personally prefer throttle cables to DBW.

    I ain't too sure but I driven a mate's r32 and it seems throttle response (the signal speed) is better, there doesn't seem to be such a delay, I wonder if the signal speed can be altered. Would make it ideal for Heel and toe, I believe I have seen some sort of module/chip that can be used to increase the frequency of signal read on DBW, not sure if it works or if it makes a big difference though. Anyone else heard of such a mod?

    Life begins at 20psi of boost...
  • Sat, Jul 4 2009 7:43 AM Re: Heel and toe not possible on DBW?

    Imagewerx
    Golf IV GTI 1.8 20v AGN 125PS
    • Joined on Wed, Feb 8 2006
    • Location: Crawley,West Sussex
    • Posts 17,925
    • Top 10 Contributor

    Blimey that was scareySurprise,saw this post and thought Shiuming was back with usCrying.

    Chris.

  • Sat, Jul 4 2009 8:06 AM Re: Heel and toe not possible on DBW?

    azzle123
    Golf IV GTTDI 1.9 AHF 110PS
    • Joined on Sat, Feb 24 2007
    • Location: Ayr
    • Posts 7,653
    • Top 25 Contributor

    Imagewerx:

    Blimey that was scareySurprise,saw this post and thought Shiuming was back with usCrying.

    Chris.

    Where did he go?

  • Sat, Jul 4 2009 9:58 AM Re: Heel and toe not possible on DBW?

    Imagewerx
    Golf IV GTI 1.8 20v AGN 125PS
    • Joined on Wed, Feb 8 2006
    • Location: Crawley,West Sussex
    • Posts 17,925
    • Top 10 Contributor

    azzle123:

    Imagewerx:

    Blimey that was scareySurprise,saw this post and thought Shiuming was back with usCrying.

    Chris.

    Where did he go?

    He never recovered from post food fight stress disorder if the legends are to be believedHunter.

    Chris.

  • Sat, Jul 4 2009 10:32 AM Re: Heel and toe not possible on DBW?

    faisal_16
    Golf IV 1.4 16v AXP 75PS
    • Joined on Tue, Feb 28 2006
    • Location: London
    • Posts 2,410
    • Top 150 Contributor

    His car still looks cracking though, wish he would come back, it was such a clean and simple mk4

    Whatever did happen, it was obviously pretty bad for him to stay away, he used to practically live on here and was a real credit to the forum

  • Sat, Jul 4 2009 12:42 PM Re: Heel and toe not possible on DBW?

    Imagewerx
    Golf IV GTI 1.8 20v AGN 125PS
    • Joined on Wed, Feb 8 2006
    • Location: Crawley,West Sussex
    • Posts 17,925
    • Top 10 Contributor

    His food threads achieved above legendary status,better than anything you got on the tellyPizza.

    Chris.

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