Does Side-Gapping Spark Plugs Work?

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Save Gas and Incerase Horsepower by Side Gapping Spark Plugs : 4 Steps - Instructables

Save Gas and Incerase Horsepower by Side Gapping Spark Plugs : 4 Steps - Instructables

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Side-gapping your spark plugs for more complete combustion!

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Does Side-Gapping Spark Plugs Work?

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