Hi, for this old cars they still are obd1 equipped and you need a older scanner just for that older cars, I do not think you can download a program for your modern mx808. Je suppose que cette explication etait suffisante pour vous.
Hi, you can download a programm called ,,car obd1 tutorial,, you can find on the play store or you tube ,with a explanation of all the codes for obd 1 cars by brand. This can be downloaded on your phone ,PC or I pad.