Old 12-15-2007, 09:06 AM
  #5  
tcarda
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Join Date: Aug 2003
Location: Big Lake, Minnesota
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The dyno guy where I dyno my motors at told me the same thing...that there is no hp in spark plugs unless one of them is bad. I have always used NGK and I have not had any problems with them, but that is just my personal preference.
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