E-3 plugs worth the money?

Recall the ads for Split-fire (maybe E3 too). They ran an engine on the dyno with regular plugs, then w/ the special plugs. Got slightly better performance. They never claim that was due to the spark plugs. Maybe the engine was cold in the first run. Could they have even left it outside overnight in 0 F temperatures. They then extol the theoretical hokiness of their patented invention. Try to sue them. You also can buy magnets to clamp on your fuel lines, vanes to spin the inlet air, even a whole "Brown's Gas" apparatus. Better to spend your money on a Physics book.