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Old 01-07-2009, 05:14 PM   #3 (permalink)
1.5Ldave
econ00b
 
Join Date: Jun 2008
Location: phoenix, az
Posts: 52

green car - '91 honda civic hb dx
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Iridium is a colder spark, ive seen them used to help prevent pre detonation in boosted motors. Platinum lasts a very long time, but it better for the price you pay. Many cars perform as well as they can with the copper plugs, which also happen to be the cheapest. I would look in your owners manual and see what plugs it recommends and use those.
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