NGK Iridium IX or Denso Iridium Spark Plugs?
03-01-2006, 07:48 PM
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NGK Iridium IX or Denso Iridium Spark Plugs?
Any comments on the difference or which is better between NGK Iridium IX and Denso Iridium plugs? The denso's are alot more explensive than the ngk, is there any reason? and how much of a difference will these plugs make on my stock 92 lude si..?
