Does anyone have a list of the possible spark sources and where they look to for the 2010 and older GT500s?

I am seeing Cylinder Pressure Limit at WOT even though I have Borderline set to around 24* at WOT and MBT set far enough away at 36* and all multiplier tables zeroed out for testing. Timing will not go higher than 20* at WOT no matter what I do. I am on e85 with 0* of knock through the pull. Where does Cylinder Pressure Limit pull info from? The Combustion Pressure Limit table is all set to 63.50 as well.