Timing question

[bigmatt89]

New to HPtuners and am messing around with my 06 suburban 5.3 trying to get the feel for this and have noticed on a particular log at 100% throttle 4800rpm at 0.60G air mass it was running 29 degrees of timing. According to the high octane timing table it's set to be 21 degrees. This seems to be a fairly constant occurrence throughout my logs. I understand various things will retard the timing but can somebody explain what actually causes it to advance 38% over what the table is set to. The attached log is what I was looking at and the time of this particular instance is 6:26:21.806.

[2xLS1]

Look at the Spark Correction AFR Correction table. It adds timing on those calibrations.

[bigmatt89]

So if I'm looking at this right the AFR correction table adds timing according to the AFR multiplier in the PE table correct?

[PetZ]

yes

[2xLS1]

Most just zero that table out and control the timing in the main table. Less variables to deal with.

[bigmatt89]

Makes a lot of sense. Thanks for your help.