I downloaded it but cant get the PC to communicate to the PCM, i have tried multiple ways and tried to find directions on this site but havent had any luck getting the communication issue solved

My son and I just finished up a tbi cinversion in his 1972 GMC truck, put a vortec 383 engine and 700r4 trans. The truck runs rich and we are haveing problems finding a way to see live data. Does...