I’m noticed some slightly strange timing behavior under moderate load that I have not been able to figure out.

My high and low tables are set the same. The car is a boosted c5 Corvette running the custom OS in SD and the drop in timing only seems to happen around 4000 rpms under decent load. I’ve logged all the timing PIDs and nothing seems to show where the timing is going.

The EST_BASE_DMA PID will show something like 19.2, but the EST_RUN_DMA PID will show something like 16. The SPARKADV PID is a pretty close match to the EST_RUN_DMA.

I’ve logged almost all the other spark PIDs and nothing shows any timing being pulled.

KR
EST - Burst Knock Retard
EST- Coolant Temp Spark
EST - Equivalence Ratio Spark
EST- Induction Air Temp Spark
EST – Total Torque Control Spark
EST – Traction Control Spark

Is it possible for KR to happen, but not show up in the KR PID. I’m able to see KR readings, but not in this scenario.

This is nothing major, but wanted to see if anyone had any other ideas.