Thanks mate. Transmission controller is of my own design, based on a cheap Arduino processor. I've saved on expense by taking the pulses from the ABS system as my output speed reference (multiplied as necessary by wheel size, diff ratio, transfer case ratios and high/low range selection), this has avoided the added complication and expense of a VR conditioner to read the transmission output speed. It's still way more accurate than it needs to be.Hi mate, nice project and very impressive multi talented skill set, I just joined to ask a question specifically about your transmission controller, is it a design of your own or something you have found on the internet ? I just did the V8 torque converter upgrade on my Td5 and am also using the Transmission Controller from a V8 disco but it needs some tweaking, but it is not programmable over the obd port, I have a desire to follow in your footsteps and dyi a controller . I can't seem to message you so maybe too new a member at this point.
I'm considering upgrading my torque converter to the V8 one also, however for me it will require a new bellhousing as the current one won't fit the larger diameter unit.
Despite not being programmable via OBD, I did determine that you could read the flash of the original ECU and then reverse engineer it and modify it as desired, but that still wouldn't give me the level of control that I wanted.
I do some fun stuff with this, like torque converter lockup in 2nd, 3rd and 4th gear, real time torque and torque demand gear selection, torque converter lockup in low range whenever at zero throttle to maximise engine braking, with the addition of adding line pressure and closing the turbo wastegate to maximise parasitic resistance. Even with the steepest hill I've taken it down (probably close to 50 degrees), you can put it in low range, 1st gear, and basically get out and walk alongside it. It will not run away.
Lately I've had the controller doing data logging to calculate the most economical gear to be in for any given speed and torque.
I have another project car that I'm also building a 4HP24 in, and have ideas for a whole new design for the controller. At that point, I'm considering getting the boards produced professionally, so I could potentially sell a few. I see quite a market in the Land Rover community.