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Thread: Discovery 2 transmission remap

  1. #1
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    Discovery 2 transmission remap

    Hi all fellow Discovery 2 enthusiasts.

    I'm very pleased to announce that for some time now I have been running a couple of Discovery 2 TD5 autos with remapped transmission controllers, and I'm really pleased with the outcome!

    In the near future these will be available for any Discovery 2 auto including the V8, although I feel the V8 TCU is probably fairly well tuned/matched to the engine.

    It's taken quite some time and effort to do... more than I'd like to admit, but it's entirely my own work from start to finish, and I'm really pleased to be able to offer this, as I felt it was always one of the last remaining bug bears of the discovery 2.

    Remapping of autos running any low stall speed converter will also be possible, but the gains will not be as noticeable as the stock converter, but most likely still worth it as we can lock the converter at lower speed which will decrease temperature and improve drive, as well as picking shift points.

    If anyone has any questions, feel free to ask here as it will hopefully improve the outcome for everyone.

    Cheers
    James

  2. #2
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    Sounds interesting James.

    With the standard TD5 transmission what have you see as the benefits?

    And I assume any noticeable fuel economy gains would be for around town driving?
    Cheers

    Simon
    2003 D2a TD5, ACE, SLS, Vienna Green.

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    A massive bug bear of mine was always the 80kmh before TCC locked scenario - in 4th that is.

    Let's say it's summer, I'm towing a trailer in 4th in an 80 zone, I'd need to exceed the limit to get the converter locked, I'd then need the vehicle to stay pretty close to 80kmh to stay locked, and it probably wouldn't, so I'm left with a slipping converter.

    After a few minutes of this style driving, you'd be amazed just how hot the auto fluid is.

    Enter the 72 kmh lock ability, car is not flaring and horrible to drive, auto fluid almost immediately drops 20c, which means not only will the fluid last longer, but the auto most likely will as well.

    On the fuel saving front, that's really hard to calculate, I'm gonna guess it won't be as much as you'd like, but the car is that much more driveable you don't care!

    Theoretically the TD5 is it's most efficient at about it 2000rpm, so the closer we can stay to that the better, obviously we can't be going in and out of lock 10 times a minute, so we need to compromise on that front.

    Other usual features MIGHT be a towing mode which would replace the completely pointless sport mode.

    Cheers
    James

  4. #4
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    G'day James,

    So I have a V8 auto computer from a D2a. Is it a matter of sending it out to you to change or is it like updating a tune via the nanocom?

    Cheers
    Chris

  5. #5
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    Hello James,

    Just to confirm will it be suitable for a Td5 box std no upgrades at all except EGR delete.

    Thx
    D2 2004 TD5 Classic

    --------------------------------------

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    Fellows, please remember AULRO does not permit buying or selling in any section other than the Marketplace.
    Discussion on what James' reprogramming will do is fine, but please don't put James in the position of salesman.
    If you don't like trucks, stop buying stuff.
    http://www.aulro.com/afvb/signaturepics/sigpic20865_1.gif

  7. #7
    discorevy is offline ChatterBox Silver Subscriber
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    Quote Originally Posted by shack View Post
    Hi all fellow Discovery 2 enthusiasts.

    I'm very pleased to announce that for some time now I have been running a couple of Discovery 2 TD5 autos with remapped transmission controllers, and I'm really pleased with the outcome!

    In the near future these will be available for any Discovery 2 auto including the V8, although I feel the V8 TCU is probably fairly well tuned/matched to the engine.

    It's taken quite some time and effort to do... more than I'd like to admit, but it's entirely my own work from start to finish, and I'm really pleased to be able to offer this, as I felt it was always one of the last remaining bug bears of the discovery 2.

    Remapping of autos running any low stall speed converter will also be possible, but the gains will not be as noticeable as the stock converter, but most likely still worth it as we can lock the converter at lower speed which will decrease temperature and improve drive, as well as picking shift points.

    If anyone has any questions, feel free to ask here as it will hopefully improve the outcome for everyone.

    Cheers
    James

    Really well done James, the time and effort ( as well as brain power) involved in this is substantial.

  8. #8
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    Quote Originally Posted by discorevy View Post
    Really well done James, the time and effort ( as well as brain power) involved in this is substantial.
    Thanks for that!

    It has taken all that I had in those 3 categories, although I'm not sure I had much of a couple of them to start with...

  9. #9
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    To the other couple of questions, I'm not sure what stuff is permissable to answer here.

    Either way the purpose of this thread was for some info on what can be done on the tech front, and hoping to garner information on what is seen as a weakness with the current setup.

    I know what I don't like...

    I'd like to know what don't you like..

    If anyone wants any further info on procedure etc.. Probably best to PM me at this stage.

    Other stuff should be fine here...I hope.

    Cheers
    James

  10. #10
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    Just to confirm, (hope it's ok) this tuning will work on ANY automatic Discovery 2.

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