Hemi Continues to quit at Speed.

Sorry, I'm not that familiar with these. Do you have it set up to "pull trouble codes?" That seems to me the first thing.

Anyway to "rig" some lights to monitor, IE power to the ECU, power to the fuel pump, or do you have a pump pressure gauge?

I know you've put one HILL of a lotta work into that, too bad you can't have some fun, now