I have an MSD ignition (distributor, box, and coil) and it works well. It was easy to install and configure, and it has worked flawlessly. This Progression ignition adds several features that I do not have and can benefit from. They are:
- Timing retard at startup. My car is hard to start when the engine is hot.
- Rev limiter. My MSD box is older and does not have this.
- Ability to change the advance curve with software. MSD can do this with springs, weights, bushings. I do not mess with my current setup because it is adequate. Changing it is another project.
MSD provides solutions to all of the above. But doing it with MSD is complicated and somewhat pricy.
I am considering changing to the Progression ignition from a practicality perspective. Perhaps it is time to move on.