The Net Results

Here's the bottom line: E3 DiamondFire spark plugs produce a faster flame front and pressure rise. This converts more of the fuel to "work" and gets it to the piston head before it is vented off by the exhaust valve. Studies have shown that for optimum tuning, an E3 spark plug allows an engine designer to use a slightly earlier exhaust valve closing than a standard plug, if they choose. For some engines, this allows an even greater improvement in power by reducing the valve overlap and intake charge losses through blow-through from the intake to exhaust valve.

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