This dual cdi idea sounds interesting but I am too cheap to try it. LOL.I've looked and looked and looked. Most CDI systems use a secondary pickup coil to trigger the spark. That and they are separate CDI and coil. Considering ours is an all in one CDI and coil, and is light as a feather, obviously it's junk.
I'm actually kind of curious what would happen if you connected 2 of the stock CDI's to the magneto and then somehow spliced the 2 plug wires together into a single plug. I have a spare CDI, but I don't know if I'm willing to try, lol.