Datastream Escort Cosworth (P8)

The P8 control unit from Weber Marelli has a data stream integrated in the processor, which allows the parameters to be read live via the diagnostic interface.

All you need is a USB-TTL adapter and suitable software.

I like working with TunerproRT.

It is available free of charge, it can be voluntarily given to the author

a contribution can be donated.

The program requires a so-called ADX file, which queries the data from the control unit, converts the answers into a readable format and then displays them graphically.

You must create such a file yourself or you can purchase it from me for a small donation.

The conversion values for the data vary depending on the setup (e.g. 2.5 or 3 bar map sensor) and must be adapted to the setup in the vehicle.

Likewise, some tuners have changed the communication protocol to protect their mapping from curious prying eyes, as this makes values such as ignition advance, injection time and quantity visible.