Thread: Discovery 2 transmission remap

Originally Posted by HRSDiagnostics

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?

As in the disassembly?

I've only done a little bit.. most of the work I've done was just straight sleuthing it out.

So working out how the box works and then visualising how it would be controlled electronically.

You know the old story.. It came to me in a dream and I forgot how I did it in another one!

Offtrack showed me a few tricks with the disassembly towards the end of my work, but the stuff I use was pretty much all Just reading the hex code.

As far as the lower lockup etc, you will get gains for sure at lower speeds, but I wonder if some of that will be lost with time taken for engine de torque , solenoid activation etc etc, if you got into a gear you could stay in and still be in the "power" band of the Motronic V8, it might be worth it then.

The code will allow you to lock in any gear at any speed, so you could do it.

I have spent literally hundreds of hours working on it and have essentially not been able to monetize it due to the end of my dev work coinciding with a number of issues that have sucked up all my time and energy.


I'm hoping that will back off and I can sell a bit of stuff, so I'm not keen on giving away the info.

If you can disassemble the M5.2.1 ems you should get on ok, but it will still take a while.

I must say, despite people looking down on the Motronic, I still think it was very clever for it's time.

Thanks,

I fully understand and respect the time youve had on it and certainly respectthat you dont want to be giving info out willy nilly, i was exactly the same when it camt to the Immo solution on my M57 conversion, and still quite a bit now too on the way i remap certain vehicles.

I will take a look at the other components and start the trail of dissasembly of my M5.2.1 and also take a look at the hex in further detail, i can see a few obvious maps and will take a look into the scalling of them and table sizes ect.

Thanks again, i plan to socket the TCU to make things somewhat easier, i may even search for a flashable IC to save on chips during the development tests ect, the next step will be to build a bench loom so i can connect to it with diagnostics ect so i can view setting ect.

Thanks again, once i have enough posts so i can PM i will fire you a message with any findings i make so you can add them to what you have.

Originally Posted by HRSDiagnostics

Thanks,

I fully understand and respect the time youve had on it and certainly respectthat you dont want to be giving info out willy nilly, i was exactly the same when it camt to the Immo solution on my M57 conversion, and still quite a bit now too on the way i remap certain vehicles.

I will take a look at the other components and start the trail of dissasembly of my M5.2.1 and also take a look at the hex in further detail, i can see a few obvious maps and will take a look into the scalling of them and table sizes ect.

Thanks again, i plan to socket the TCU to make things somewhat easier, i may even search for a flashable IC to save on chips during the development tests ect, the next step will be to build a bench loom so i can connect to it with diagnostics ect so i can view setting ect.

Thanks again, once i have enough posts so i can PM i will fire you a message with any findings i make so you can add them to what you have.

Thanks for the offer.

Sounds like you are pursuing it in much the same way that I did!

I'll pm you and go from there.

Cheers

Thankyou thats great i will fire you a pm when my count is adequate. only 1 more to go lol

I will hopefully get a little time later today, once ive worked through my booked in jobs to get a bench loom made up and i can then socket the board ready to start some testing.