If I understand the technology, conceptually it can work.
Long story short (my own simplified understanding)
Your secondary ignition system has resistance from the wires, the resistor in the plug, and finally infinite resistance in the spark plug gap. When the coil "fires" there is a voltage rise time as power builds in the entire secondary system from the spark plug wire down till the point that there is enough energy to jump the gap. From what they claim, they are able to take the energy normally lost as heat during this rise time, and store it. Sounds to me like there is some sort of capacitor in the spark plug.. then somehow (this is where my knowledge of electricity fails me) when there is enough energy to jump the gap, the spark jumps the gap and discharges what I will call the capacitor that was charging during the rise time.
Wild ass guess here, the capacitor (or whatever they use to store energy) is "wired" in parallel with a direct path to the spark plug gap. When the energy is not enough to jump the gap the capacitor is charged instead, when finally there is enough energy to jump the gap the capacitor discharges because both ends of the circuit get closed by the spark.
If BEST CASE SCENARIO they work like this, then, I can see how it would be a benefit to a turbo charged car like ours under high boost.
They have a link to a website which is another product they sell (im guessing older) called direct hits. On that site they refer to the devices as capacitors and they mount to the top of a non resistor spark plug. It basically does the same thing as the pulstar plugs but you can use any non resistor plug you want. They have some supporting dyno evidence.
I would like to try these things out if someone gave them to me for free. I've seen what a dyno looks like when you start blowing out the spark (my car)
