Interesting, these sparkplugs claims up to 12% increase in HP

Crap like this has been around since before I was born. I used to read mechanics/ science magazines from the '30's and '40's and this junk was in them back then. J.C. Fu**ney used to sell some sort of "flame thrower" plug, I don't remember.

This goes down the same road as hydrogen generators, intake turbonoanananators, and the rest of that tripe.