So I have an 07.5 Sierra with the factory L76 truck engine.
I swapped out the 87mm factory TB for a 90mm factory TB.
AC Delco part #12605109
I read its an OEM for anything from an LS3 to an LS7
So, I was going to pull a stock tune off the repository and copy over the data.
I just dont know what stock tune to grab and also what data to transfer over
Also, as a bonus question, now that I switched to the LSXRT manifold: do I need to change the manifold volume parameter under Airflow--> Speed Density