Originally Posted by REXtard04
There was a test done recently, the article is in Import Tuner magazine regarding the testing results of stock copper plugs, platinum plugs, and iridium plugs. To the skeptics, the iridium plugs actually showed quite an improvement over stock or platinum plugs, so I don't see how there can be any argument against them...other than the fine tips that can tend to snap off if you're not careful. You will be fine with the 1-step colder plugs, give it a shot but stick with NGK the Denso plugs are junk.
Why are Denso's junk? Ran Denso's in my commuter car (Acura Integra) for nearly 80K and they still look and perform brand new.