Are these figures subtracted from the total spark advance when at that temp & kPa?

Also, in the WOT starts at VDC of TPS, I want to turn some of these UP at the lower RPM. I made a chip once where I had tried some things with this and it caused the engine to stall once when I nailed. So I'm kinda hesistant to mess with again even tho I never really proved that was the cause. Anything I should watch for?

 

There is a doc over on the GMECM page that explains all the 747 spark functions. All I remember is R. Rausher wrote it.

 

Those are EXTRA spark advance degrees ADDED to the Main Spark Table. ie, more advance when engine is cold and under rich/choke conditions. Doesn't really need to be messed with. i lowered mine a bit cause of my aggressive spark table..