Megasquirt ECU and Arduino RS232 Serial Communication

Hello everybody.

We are trying to set a communication between Megasquirt 3 (an aftermarket engine ECU) and an Arduino board through the RS232 port of the ECU converted via a module to Tx and Rx pins to be connected to those of the Arduino.

The CAN of our ECU isn't working so that we are looking for using the serial communication instead.

Do anyone here has an experience in this field? I hope to hear from you.

Thanks in advance

If the CAN interface isn't working, are you sure that everything else works?

Else I have no idea, please consult the data sheet.