Starting to Learn on 95 G30 5.7 for Towing

[Fast355]

To know if the base timing is accounted for you would need to look at the equation for the spark advance in the .ads file.

I really need to pull the $OD Hack and look at it really well. Something tells me that zero'ing out the altitude spark bias is what is causing your values to be off so far. Where there is a bias table their is an offset value.

There are also other spark advance tables in play that would keep you from matching the Main Spark advance table. Abuse Mode spark retard, Coolant Temperature compensation, Catalyst Overheat spark, etc come to mind.

^^^ I was onto that bias table still having a value other than zero and zeroing the table bias as causing an issue.

You can easily edit the ADX to include the initial timing value in the datalogged value.

From what I remember Initial advance is actually subtracted out of the final spark advance values right before the PCM checks that the values are within the Min/Max values and uses it for EST calculations.

Whoever wrote that article straight up plagerized some of my own tuning information I put on a forum years ago not that I really care.