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What the other spark plug companies won??t tell you: Old-style, single ground-strap spark plugs have been around since the beginning of the gasoline engine. They are easy to manufacture, cheap, and use old-school technology. Those in the know understand standard plugs are simply a compromise, designed for the average driver. When you add performance modifications like high-flow air filters, headers, performance exhaust, nitrous, or superchargers, you need stronger spark to maximize the horsepo