Quick Spark plug Question?
06-28-2006, 01:28 AM
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Quick Spark plug Question?
2003 for mustang, I am gonna get the factory Motorcraft plugs, but Does anyone know the # for one step colder than stock? I'd like to get a step colder to help with a slight Detonation problem I had when I maxed out the timing with 93 octane.......... Any help appreciated, thanks.
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