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Quote (Powerzen2002 @ April 26 2002,02:17)</td></tr><tr><td id="QUOTE">Running a colder plug on a non-turbo, what would be the side effects? Jumpy engine? <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/sad.gif" border="0" valign="absmiddle" alt='

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No, a plug that's too cold for the application will just have a tendency to develop carbon deposits over time, which might cause misfiring ("jumpy engine") when they get real bad. New plugs that are too cold won't make a difference.
Anyway, you're probably not using cold plugs. NGK plugs have two numbers in their model # thingie: the -xx at the end is the gap they were designed for (-11 means 1.1mm, or .044 inch) and the other number is the heat range (5 is stock, a higher number is colder).