Maybe information in these threads will help?

http://gearhead-efi.com/Fuel-Injecti...d-is-TunerPro)

http://gearhead-efi.com/Fuel-Injecti...S1-PCM-Project!

http://gearhead-efi.com/Fuel-Injecti...-Tool-Released

https://ls1tech.com/forums/pcm-diagn...-handheld.html

https://www.youtube.com/watch?v=xNuxBIp5wQE

dave w