I was wondering if anybody had installed Iridium Spark Plugs in their Legend. My friend who put Iridium Plugs in his '00 Accord said that that it helped his low end torque significantly. I was planning on buying Denso Iridium Spark Plugs, in which the manufacturer claims a 5-10 hp gain. Has anybody put Iridium Spark Plugs in their Legends? If so..did you notice a difference in performance? and where did you buy them and for how much? Sorry for the long post. Thanks.