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Thread: Recalibrating the speedo

  1. 16th April 2020, 05:58 PM #11
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    Quote Originally Posted by Barraman View Post
    Where do I find the 'market setting' and the 'wheel size'? Couldnt see them in the menu I followed.
    No idea with GAP, sorry. With Nanocom's Genesis you can find and edit it in the CCF file. I'm sure there'll be a way with the GAP tool.
    2013 D4 expedition equipped
    1966 Army workshop trailer
    (previously SII 2.25 swb, SIII 2.25 swb & lwb, P38 Vogue, 1993 LSE 3.9V8 then HS2.8)
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  2. 16th April 2020, 06:15 PM #12
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    You didn’t read my post Recalibrating the speedo

    On a D3 you ONLY adjust the tyre radius.
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  3. 16th April 2020, 06:31 PM #13
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    Quote Originally Posted by Tombie View Post
    On a D3 you ONLY adjust the tyre radius.
    Oops! Sorry all for being misleading. I hadn't realised it was a D3.
    2013 D4 expedition equipped
    1966 Army workshop trailer
    (previously SII 2.25 swb, SIII 2.25 swb & lwb, P38 Vogue, 1993 LSE 3.9V8 then HS2.8)
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  4. 16th April 2020, 06:32 PM #14
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    Quote Originally Posted by DieselLSE View Post
    Oops! Sorry all for being misleading. I hadn't realised it was a D3.
    Sorry mate. Wasn’t aimed at you Recalibrating the speedo
    Aimed at Barra’ who is changing everything but the specified item that Gap advise to change.
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  5. 16th April 2020, 08:04 PM #15
    Redtail
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    Quote Originally Posted by Barraman View Post
    According to my GPS, the speedo in my D4 is over-reading by 6 kph.
    Can I recalibrate the speedo with my Gap tool?
    If so, can someone point me in the right direction? I can’t find anything in the Gap tool manual.
    Tyre size worked for my 2011 D4
    find Tyre Size MSB - IPC

    I went from 31 to 33 to get it spot on with the 19's that were fitted at the time.
    Changed that same parameter when I went to 18's, but I can't recall what value I had to use.
    If at first you don't succeed, that's one data point. - xkcd
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  6. 16th April 2020, 08:14 PM #16
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    What is a ccf?

    sounds like a fire extiguisher.
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  7. 16th April 2020, 08:43 PM #17
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    Quote Originally Posted by ramblingboy42 View Post
    What is a ccf?

    sounds like a fire extiguisher.
    Car
    Configuration
    File
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  8. 16th April 2020, 09:07 PM #18
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    Quote Originally Posted by ramblingboy42 View Post
    What is a ccf?
    Car Configuration File. It is the primary binary file that contains the parameters of the car and is referenced by other ECUs. Each ECU has it's own software version, too.
    There are some parameters that you can edit if you have a suitable tool, like a Nanocom or a GAP.
    You can do simple changes like removing the leading zero on the odometer (up to 100,000kms) so that it displays 75028km instead of 075028km. Or more tricky stuff like calibrating the speedo on a D4 or adding new features to your car like upgraded sound systems or even an e-diff (but you also need the hardware, wiring and upgraded ECU software and a bit of luck as well).
    2013 D4 expedition equipped
    1966 Army workshop trailer
    (previously SII 2.25 swb, SIII 2.25 swb & lwb, P38 Vogue, 1993 LSE 3.9V8 then HS2.8)
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  9. 16th April 2020, 09:10 PM #19
    Barraman
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    OK reset!

    The vehicle is a 2015 D4 with Pirelli 255/55/19 tyres.
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  10. 16th April 2020, 09:34 PM #20
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    Quote Originally Posted by Barraman View Post
    OK reset!

    The vehicle is a 2015 D4 with Pirelli 255/55/19 tyres.
    PM me your VIN and I'll check your as built CCF.
    2013 D4 expedition equipped
    1966 Army workshop trailer
    (previously SII 2.25 swb, SIII 2.25 swb & lwb, P38 Vogue, 1993 LSE 3.9V8 then HS2.8)
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