They are all hype and they claim better power and mpg BULL ch!t they dont even work on the dodge rams there junk IMO.....If you dont belive me just google e-3 sparkplug problems they send codes/dont last and have caused other problems to.
A spark is going to occur wether you have one tip, or wether you have 15. The heat range isn't changing, so combustion isn't going to alter.
you seen better fuel mileage in your dodge because it was a brand new plug. It's good marketing, they know your replacing old plugs with a new ones to claim you'll see better fuel mileage.
i used them in my dodge 2006 gas and gained 3 mpg on long steady trips so i tried them in my 2001 800 summit found easier cold starts and maybe just wishing better snap to the throttle. just what i found. my 2 cents