Mopar orange box retards timing?

The factory and smart tuners address the slew rate in the distributor curve. So its there, but covered by the advance curve.
Run a MP tach drive race distributor with a 'slow' ECU and the timing stays steady. That's because the heavy secondary spring kept the distributor from internally maxing out at low rpm.
Bill Baldwin shows in a FB video what happens when a locked out distributor is run up from 1000 to 6000 rpm. Almost 5 degrees 'lost'
See if this link works.


And more tech on the subject:
drag race engine ignition systems - Speed Talk

https://board.moparts.org/ubbthread...mallory-unilite-timing-issue.html#Post2488599