Not yours, Dans old stuff.
We spent 3 days running RFI checks and checking many new coils. You can see the relationship between spark and RFI.
We don't have a hi-v probe that will work yet. But our basic quick check on a coil is to take a spark plug and cut the side electrode off and then buzz it up to 12,000 rpm. If it keeps sparking then it will run any engine anytime. Some coils were falling down at 7000.
Shielding also take a big bite out of spark quality. We THINK its causing some capicator effect.