The ECU RPM limit was set to 9057
The Dyno plot below shows the ECU shutting down at ~8800RPM

Here is what my Rev-limit tab looks like:

I took a video of the dyno pull and conducted spectral analysis on the audio. It looks to me like the ECU is shutting things down at about 8850 RPM which agrees pretty much with the dyno plot.
here is the video:
https://youtu.be/1_V3xU2Kf5k
If you'd like me to share with you how I conducted the audio analysis let me know - that might be helpful.
Any ideas on what might be happening