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The Terminator
Terminator Talk
Best spark plug
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<blockquote data-quote="CobraBob" data-source="post: 14880632" data-attributes="member: 6727"><p>This. And, iridiums are more prone to damage when gapping if not done properly. Iridium is a very hard material and more brittle. But iridium plugs last much longer. Performance wise, there is no advantage to using iridium. I'm going to say most use the copper TR6 because they are much cheaper than iridium. And changing plugs on a 2003-2004 Cobra is so easy. In the end, it's more a personal choice. Both will work fine.</p></blockquote><p></p>
[QUOTE="CobraBob, post: 14880632, member: 6727"] This. And, iridiums are more prone to damage when gapping if not done properly. Iridium is a very hard material and more brittle. But iridium plugs last much longer. Performance wise, there is no advantage to using iridium. I'm going to say most use the copper TR6 because they are much cheaper than iridium. And changing plugs on a 2003-2004 Cobra is so easy. In the end, it's more a personal choice. Both will work fine. [/QUOTE]
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Best spark plug
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