Questions, questions lol!
The pdf tutorial is generic and not specific for the LS2 with a E40 PCM.
Where can I find explanations for all the pids? For example
I assume I should use
Commanded Air Fuel Ratio B - LS2 GM.AFR_B
instead of
Commanded Air Fuel Ratio GM.AFR
What is the difference between
Knock Retard GM.KNKRET
and
Retard Due to Knock GM.KR