those plugs make me think of this.
OKADAPROJECTS | PRODUCTS | PLASMA DIRECT
no direct % for economy but it does state reduced fuel consumption.
I just cant see 7xx$ for coils. wonder what would happen if you combined these coils and those plugs? near 0% wasted fuel in combustion?
btw does anyone know what is required to become carb approved? as the coils are?
what about these plugs?
http://www.powerstarsparkplugs.net/