Here is a test on the box going in my car. It’s wired up exactly as it will be in the car. I forgot I recorded this, as I had forgotten if I even tested this box and was going to pull the box back off the car just to test it.
This just happens to be a very good box.
If you watch it I have the nasty habit of using distributor and crank degrees interchangeably and that’s bad.
Every tic mark is 1 distributor degree or two crank degrees regardless of how I screw it up.
But the box does retard. If someone really wants to throw up in their mouth I can do a test with the orange box hanging on the wall and you can see what massive, early retard looks like. I think that box retards at least 8 degrees by 7k or something. It’s pretty nasty.