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Old 04-24-2007
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screamin demon coil spark plugs?

I just got screamin demon coil in the mail today. The instructions say that to gap the spark plugs .065. About 8,000 miles ago I changed my spark plugs to denso iridium spark plugs. My question is should I just regap the iridium plugs or sould I just go to the auto store and buy some motorcraft plugs?
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Old 04-26-2007
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Id get a whole new set of plugs and gap them at what the instructions say. But Thats me.
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Old 04-26-2007
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I too would get a set of new plugs. If you have the money, it won't hurt. However, if you don't have the money, I'd imagine it wouldn't hurt to re-gap and reuse.
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Old 04-26-2007
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I'm using Bosch Platinum +4's and they work great. The extra voltage was made for those plugs as they have pretty big, non-settable gaps. This is why some people have TERRIBLE experiences with the +4's.
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Old 05-01-2007
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iridiums are good plugs. I love the small tapered end. I'm not keen on changing plugs for the sake of changing plugs. This reality came to me when I swapped plugs and stripped the threads. What a pain.

Because of that experience I'd rather get a get set of double plat or iridiums and forget about them for 50,000 miles. Maybe run like you have now and if you don't see a mpg improvement, pull and regap them.
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Old 06-09-2007
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thinking about getting the bosch platinum plugs w/ non adjustable gaps but because of the fact they recommend increasing the gap when running this coil does that elimitate any performance gain u might seen with this coil?
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Old 06-10-2007
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thinking of getting the bosch +2 plugs to use with this coil anyone have experience with this combo on a 4.0 ohv or otherwise? the fact the gap is not settable affect the performance?
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