How much voltage is too much

AFAIK;
All the Blasters were designed for MSD Series 5,6,and 7, CDI-type ignition systems.
Just cuz MSD says the Blaster-2 "can be" used with a transistorized non-CDI ignition system, doesn't mean that it "should be".

edit;
then again; CDI systems require very specific fast-acting CDI coils, and canister coils are not it.
Blasters are like, in-between coils.
They work on everything, but what does that mean to me? I passed.