^^^^^ This!
I've seen inconsistant results with the Mopar orange box. A friend of mine had one on a closed chamber 318 in his '67 Fury and it started feeling for a ground, internally, like a bad spark plug wire on a header from burning.
Eventually, it started acting like a capacitor and buzzing, trashing the entire electrical system to a point where it stressed the ammeter lead to the point of burning.
We traced the short back to the orange box.
I'm not convinced that those computers are doing what they should be doing, all the time.
There is a company that is making a replacement computer with a tunable limiter dial on it. It's completely digital and likely does a better job at keeping timing together.
http://www.thertgarage.com/products.html
I'd like to see some reviews on it, but it seems like a good idea.
