ANSWERS: 1
  • <h4 class="dechead">On One Hand: Bosch Promises Higher Performance and Efficiency

    Bosch marketers claim that split spark plug heads double the plug's output and help ensure complete combustion of fuel. According to Bosch marketing material, the plugs generate two separate sparks, doubling the plug's ability to ignite fuel and effect combustion. In addition, limited claims indicate that split Bosch plugs increase horsepower by more efficiently igniting fuel.

    On the Other: Reviews Find No Advantage

    Spark plug reviewers who created a spark plug Frequently Asked Questions document on f650.com point out that Bosch split plugs do not increase horsepower or more efficiently burn fuel. The reviewers cite technical documentation that states split plugs have no significant advantage over single head spark plugs. Finally, a single head spark plug should produce a spark every time it fires until it reaches the end of its lifecycle.

    Bottom Line

    A considerable amount of technical documentation describes how Bosch split plugs exhibit no real advantage over other spark plug models. In addition, a chart of misfire statistics confirms that these plugs misfire as frequently as other, less expensive plugs.

    Source:

    F650.com: Spark Plug FAQ

    autohausAZ: Use the Proper Spark Plugs & Spark Plug Wires

    More Information:

    Bosch in the USA

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