Its a pretty cool system. I took some heat on some posts a few years back by those who thought it was hype. Its actually nearly identical to a system Ford used a few years back. It is capacitive discharge...in that there are massive individual capacitors...inline....on each plug wire. The wires themselves I believe are double wound to amplify. They are about 12mm in diameter. Each one has its own braided grounding loom. They have a central coil....that is an amplifier much like that found on the Jacobs system. Yes, they have a bit of hype due to the amount of publishing and testimonials....but the engineering is sound.
the claim to fame....and I have seen this in person.....is that it puts out sparks in the 300KV range. Thats 300,000 volts (

). They prfere that you use the non-resistor Beru silverstone, silver electrode plug. It does make a difference with this application. It produces and blue purple sprk about the size of a dime.....no sh*t! The part that twists most naysayers heads...is tha they say that much voltage would cause the plug to melt. The reason why it does not...is sound. A system like the MSD..delivers its full range of 40-50 KV spark in say...50 nanoseconds. I'm going off memory here...so I don't know the exact amount.....but its rather long...in spark terms. This system dumps all of its spark in ....in like 10 nanoseconds. Not only is it huge and hot....and causes excellent ignition in high rpm, high compression engines.....but at that speed, it does not hang out long enough to overheat pieces. The silverstones do make teh big huge spark. The Bosch W-7 DTC tripple coppers make one about 1/2-1/3 that size...but still huge by any standards. But with three electrodes...the variation and forking ...and infusion with mixture...is excellent. I wonder what the iridiums may do?
Anyway...those I have found using it...including several racing outfits...swear by it. What many do say...is that after a while, the capacitors may get weak. Wether this is due to overheating....or caused by poor location of the grounding braid on the engine...they don't know. Its popular among road racers. But they say...that even if they have to replace the wires at the end of every seadon..which they sometimes do.....its worth it.
It can be triggered just fine with a pertronix or Mallory...or even points. Ray