Trip Computer Datasheet?

[tajgreidotu]

Looking for new possibilities I am searching for a trip computer datasheet (not for the wiring loom, just the datasheet of the pcv and how it works inside....and also to understand the coding plug.

Do you guys have one?

[ManiacuV6]

The microprocessor is made by NEC UPD7508c c61. I tried to find anything about it but nothing but the application file in pdf format.
IF someone knows hot to modify the content in the microprocessor you can display the boost pressure like on UrS4 and many other things.
I notices if you remove the board computer from the intrument cluster you have plany of space for a big screen so you can easily make a custom BC.

[tajgreidotu]

Like for example in a wiring scheme of an A100 C4, I saw this "air flow sensor" in the that I dont know if it is the MAF or other things

[tajgreidotu]

The microprocessor is made by NEC and I can have a look to see exactly the part number. I tried to find anything about it but nothing but the application file in pdf format.
IF someone knows hot to modify the content in the microprocessor you can display the boost pressure like on UrS4 and many other things.
I notices if you remove the board computer from the intrument cluster you have plany of space for a big screen so you can easily make a custom BC.

Hi ManuacuV6,

Im looking for any kind of information. Im not an expert in microprocessors, but would be awesome to know more, and I have a friend that he is going to help me with it. First of all I would like to see how the pcb works and the differences between the S2 and the S4 one.

Thanks!

[ManiacuV6]

First step is to read the microprocessor and to dissansembly the code to see exactly what every subroutine does. IS not easy but can be done .