This graph shows that the stock timing for my 2023 LGX Camaro increases sharply between 6800 rpm (peak power) and 7200 rpm (fuel cutoff).
Attachment 161723
Question 1: Does this behave as a soft rev limiter?
Question 2: Any risk in decreasing the timing at 7200 rpm to 21-22 deg to flatten it out beyond 6800 rpm?
Question 3: Would doing so make the engine pull harder to fuel cutoff?
Odd that the spark advance is reduced past 5200 - I would've expected the advance to slowly increase as RPM increases to compensate for the faster-moving pistons.
Could try dropping the spark at 7200 a couple of degrees at a time and see if the RPM rate of change increases or decreases from 5200 and up (do the same WOT test on the same road, same direction, etc.). Likewise you could slowly increase the advance from 5200 to 7200 and see if there's anything to gain, keeping on eye on your knock sensors. On my LFX I'm around 26 at 5200 with a more or less linear increase to 29 at 7200. Tuned for 91.
Do you see any noticeable change in cylinder airmass from 6800 to 7200?