Originally Posted by dodge dude94
Would you recommend the extended tip iridium plugs over extended tip copper plugs? (BP7HS, for example)
I don't now how or why Iridium's seem to make a better spark, they just do. I can feel the power gain though small changing from a BP7HS to a BPR7HIX, but you really notice it if you have to change back, kind of like your motor was kicked in the balls hehehe ;-}
Note the number is a heat number and they go from 5 to 8, the hotter your climate the higher the number you want, 7's or even 8's here in the desert in summer.