Discovery 2 transmission remap

I believe the 4.6 equipped cars actually came with a 4HP24 box as standard, this is a pretty handy upgrade over the 22.

Ashcroft engineering in the UK should have most of the bits to adapt the TD5 to the 24.

If you go this way the TCU will still need remapping, but I think if you want to go diesel with auto, this is the easiest/best way.

Sierrafery's suggestion of the auto out of a D1 will also work and be easier to do, but it's obviously a weaker box, and the big positive of no electrics is also it's big failing!.. Only IMO of course.

Do you have any land Rover specific diagnostic tools?

Cheers
James

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Originally Posted by shack

I believe the 4.6 equipped cars actually came with a 4HP24 box as standard, this is a pretty handy upgrade over the 22.

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Yes, all 3 of my discos are 2004 and all have a 4HP24 for sure.

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Do you have any land Rover specific diagnostic tools?

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Yes I have a Nanocom. I also have a pretty high end Autel that does some stuff.

Cheers
James[/QUOTE]

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Originally Posted by Mtnman42

I do have a source for TD5 drivetrains so I will explore that.

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That's interesting. Didn't think the TD5 Disco made its way over there. Is your source Defender?

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Originally Posted by Tins

That's interesting. Didn't think the TD5 Disco made its way over there. Is your source Defender?

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Yes, they are Defender from UK. There is a company importing them and completely resto modding them with modern drivetrain, interior etc and selling for almost 200k, go figure. They sell off the original engines.

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Originally Posted by Mtnman42

Yes, they are Defender from UK. There is a company importing them and completely resto modding them with modern drivetrain, interior etc and selling for almost 200k, go figure. They sell off the original engines.

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Aah. Seen a couple of mobs over there doing that.

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Originally Posted by Mtnman42

Yes, all 3 of my discos are 2004 and all have a 4HP24 for sure.



Yes I have a Nanocom. I also have a pretty high end Autel that does some stuff.

Cheers
James

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[/QUOTE]I've sent you a PM with contact details

Hi all, ive recently done a deal for a D2 with the 4.0v8 Thor lump fitted and its matched to a 4HP22, i remap myself and have a partial read and a full read from the M5.2.1 Ecu, BUT i also have a read from the TCU and am very interested in mapping it to optimise it for use in a CCV Trialer that i am building.

i have already removed the IC to get a read from and would be very interested to see if Shack is still progressing in the development side of things?Attachment 192412Attachment 192413

Thanks steve

I haven't done much on the Dev side for a while, that said I can do most things already.

The TCU tuning for the Motronic D2 is already pretty good IMO, it's the TD5 version that's problematic.

What changes were you hoping to make?

Did you manage to read the M5.2.1 without removing the chip?

They are well designed to stop you doing that!

Thanks for the reply.

I would like to be able to alter shift characteristics ect, basically i would like to be able to test and find the "best" settings for the Trialer in comp scenario, ie i will never be going fast so would never see a locked status.

Yes ive read the AM29F200BB whilst still mounted to the pcb. i can get a partial read containing the map tables and also a full read for the full bag of mashings.

Please do you have any pointers as to info i can use for reverse engineering of the TCU please?

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Originally Posted by shack

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

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Old thread, how much am I looking at for something like an auto remap?