Testing the HiRev 7500

I don’t know what to say. You can see in the video the box CLEARLY retards.
I agree your system retards. Distributor plus control unit. Before you get all bent out of shape because of who the messenger is just hear me out. The distributor you are using uses a variable reluctor sensor that generates on its own ac voltage signal. It has 2 wires.

You can test this with your distributor machine. I don't know if you can trigger a chy. ecu with a distributor that generates a digital signal ( Like a fast distributor, 3 wire that needs power supplied to it) but you can do this test with a fast box and probably a msd 6 box. Use the Chrysler distributor then test the digital distributor and see if there is a difference in how much the "ecu" retards. If you don't have a digital dist. try triggering with a points distributor. I'm not familiar with a unilite but if you can trigger the msd with it you should see the difference with it also.