Maybe it's good to realise that any EI is in essence nothing but a switch in the NEG path of the ignition coil's current. It's only because the transistor involved, cuts current way faster than a mechanical contactbreaker, that the induction produced is better, which in its turn results in a slightly more reserve for the energy of the spark. The rest is imagination and projecting ideal properties. No EI will produce even one HP more over a stock kettering ignition in good condition. Because there's no sparking between breakerpoints, there is a slightly better spark in the low rpm, resulting in a possibly nicer idle and a somewhat better performance in the high rpms.
Never understood what's so special about the Boyer & Bransden. Why you'd want four plugs to fire simultaneously, is an enigma for me. To me it seems that's energy wasted... Well, such an EI is cheaper to make ofcourse, that I know. All in all there's a lot you can sell with the invisible mysteries electricketry and magnetism. Boyer & Bransden... I guess you pay for the name, in this case you pay for both names. A lot of companies use this name & name trick, as to suggest one family could not have been enough to reach this quality. Seems folks are easily impressed by double names.
Here are a few:
Johnson & Johnson - talcum powder
Cross & Blackwell - spices
Benson & Hedges - homocide
Smith & Wesson - homocide
Bonnie & Clyde - banking
