Total hype. You can't spark to four locations at once, electricity will only jump to the closest target.
Not to mention that the other three arms not recieving the spark just block the flame front from reaching the rest of the cylinder easily.
Save your money and buy some NGK copper or platinums.
Originally posted by /^Blackmagik^\
i have heard that platinum plugs are actually bad for your engine because they burn too hot and will burn pits in your piston head.
With the same temperature setting, copper and platinum plugs are the same temperature. But that doesn't affect the temperature in your engine, just the residual heat held by the spark plug. Hotter plugs stay cleaner, but you run the risk of detonation in high pressure or nitrous applications.
In fact, many Hondas came with platinum spark plugs stock, including my GSR. But, the move now is toward iridium plugs stock, extending the service interval to 100,000 miles.