ECM table 12765 is the cylinder air delta table you adjust. When people say reduce by 10%, you don't actually try to put that value in there. Just enter .90 in the adjustment box up top and click multiply, that will then reduce the table by 10% in this case.
Or for any table if you wanted to add or remove 2% it would be either 1.02 or .98.
I disable burst knock completely, it's not required. Just zero out the whole table.
Reduce the timing a few degrees, aim for mid 20's at WOT. Verify what cylinder airmass the engine is at under those condition and lower the timing as required. Lower the low octane table the same amount.
It is never okay to copy both high/low tables when running a stock operating system. If there was knock, the computer could never pull timing and use the knock learn factor to blend the timing from the high to low. Even with 91+ octane fuel or whatever you still want the timing to be different.
The computer is always using the high octane table unless the knock learn factor is being used. You have several other spark correction tables that are adjusting timing as well, so be aware of those. There is a base fuel spark correction, intake air temp spark correction and coolant temp spark correction to name a few, other can be torque mgnt based. Logging all those tables would tell you what is adding to the base high octane spark table.
Low 12's AFR is about perfect for safety and torque. I command 12.2-12.3 on pump gas, even when I don't have a wideband hooked up. No sense in running it on the edge with 12.7 or higher to have minimal gains.
