Agreed, stick with correct NGK for your engine these E3 are hype. I have seen these and other multiple ground plugs before, "More Power", "Saves Fuel", I doubt these claims unless previous plugs were worn, ignition system not tip top shape and the engine was not delivering. Regardless of multiple ground electrodes only 1 will fire at a time and which one is random and depends on voltage needed at each ground electrode (and it will be slightly different). If ignition system is in tip top shape it can only produce so many volts (independent of spark plug type/design). What the engine needs to ignite the spark is designed to be less than what the ignition can produce, the difference is "ignition reserve". As spark plugs wear out (and ignition system wears) the reserve is reduced and if really worn no reserve left and engine operation problems. More reserve is good and spark plugs will not increase the reserve. A tip top ignition will give the most reserve it was designed for to light the plugs.
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