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the only advantage I can think of of iridiums is the possible longevity of iridium vs platinum vs copper. Some cars require an act of congress to change the plugs, and for not needing to change pugs for 100k miles, I would gladly pay more. That and the iridiums/platinums are supposed to give a stronger spark when worn out compared to same miles of copper plugs.
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 RIP Maxima 1997-2012
Quote:
Originally Posted by jamesqf
I think you missed the point I was trying to make, which is that it's not rational to do either speed or fuel economy mods for economic reasons. You do it as a form of recreation, for the fun and for the challenge.
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