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Old 04-29-2008, 04:02 AM   #1
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spark plugs

with all the crazy spark plugs out there has anyone tried them? they all clame higher hp/mpg.

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Old 04-29-2008, 08:44 PM   #2
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ngk is better than autolites in both power and mpg for me

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Old 05-07-2008, 06:43 PM   #3
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I have a '95 Miata and put in some platinum (Bosch ?) and milage dropped. Went back to specified NKGs and milage came back. Driven sensibly, I get 32 hwy and with sprited, boy-racer runs throught the TX hill country and almost no 5th gear usage, it still stays about 27mpg.
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Old 05-07-2008, 07:00 PM   #4
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I usually swap in the Bosch Platinum +4 plugs when it's time for new ones. Haven't noticed any MPG change, but the van does feel like it has more umph when I need to drop the hammer down.
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Old 05-07-2008, 07:38 PM   #5
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I think it depends on the car and what is OEM for it. NGKs work best for Hondas.
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