Bill,
While waiting for Dyna results, could this be a good time to spend 2-3 hours and install the box that arrived? Motor stays in the frame. There's the 12's all season long!
Yes, I use MSD on my bikes. The MC1 is an analog circuit box, very dependent on voltage levels. MC-2 only slightly better than MC-1. You get near 11.0 volts and you'd better be charging up the battery. If the voltage dropped below 11, it would still start and run, but not rev over 5 grand. Digital MSD-3 boxes for bikes are out there for years; they will run fine at least 1 volt lower without problems. (~$530 new) Advance curves that you can make on your laptop? MC-4 (~$740 new) Used units are hundreds less. Dragbike.com classified ads sometimes have used ones; Ebay sometimes has them as well. Good support for problems from MSD. Vibrations are the only avoidable killers; units come with rubber mounts. You can get into corrosion issues over longer periods of time. Maintenance usually prevents/avoids that problem. Hundreds of MC-1’s still running all over the world. They outlast most race bikes... Housings are the common place for added "traction control devices", not that we need that!
JW