Spark plug leads ? - Harley Davidson Street Forum - Street 500 and 750
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post #1 of 3 Old 09-01-2016, 06:24 PM Thread Starter
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Spark plug leads ?

Hey can anyone tell me if changing their spark plug leads to bigger ones changes the performance ? Or they just done it for looks ?


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post #2 of 3 Old 09-01-2016, 07:33 PM
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I did mine for looks, I liked the neon green accent they gave the bike.

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post #3 of 3 Old 09-02-2016, 05:46 AM
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Basically, The Lower Resistance of the wires allows more Voltage to the Spark Plugs. On a Stock Engine, Wont make much of a Performance difference. Racers use them with a "Hotter" Ignition Coil. for more Complete Combustion. Due to the higher compression, Higher volume of air/fuel inside the engine.

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