using a odb2 scan tool with live data feature..
i can’t get couple features of live data to tell me anything.
like.. anything to do with fuel,

thete is only 4 wires going into the obd2 plug..

shouod ther b more?
harness was made by ORS

 

It would really help to know just what year engine and what vehicle it came from you have so we know which engine harness your using

Then no telling what ORS has done do you get schematics showing what they did

Your not getting the fuel trim

 

should be a +12v, signal ground, chasis ground, and the signal wire from ecu.