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I looked at my plugs in the titan I believe they are NGK iridiums, had the real tiny center electrode, need to look up the part number. With 13k miles however you wouldn't be able to tell the difference between that plug and a brand new plug. Zero carbon or any other build up on, like i said looked brand new.
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04 Titan CC,BT,OR,4X4, 5333lbs, 15.42@88.79mph stock
Zoomers catback, 2* timing advance
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