openecu.org

is "Ignition Timing (°BTDC)" the actual total timing meaning "base ignition timing" + "ignition Correction table"



or



is Actual ignition advancement = Ignition Timing (°BTDC) + Knock Correction (°BTDC) ?



Thank you.

The log value is the actual deg BTDC the engine is running at that moment. It is the accumulation of many maps. I'd say most of the Subaru ECUs have 5-10 maps total that determine your final timing value.