Reviewed by: Dustin10/12/2012 07:48AM
Product ownership: Less than 1 yearNot purchased from: 5X Racing
As long as I've owned a vehicle, the spark plugs have been NGK. I will not settle for less. I've got the Iridium IX in my 91 Miata and along with the Magnecor KV-85 plug cables, I could tell a difference in the first time I fired it up and went for a drive. Smoother overall engine performance, definitely, especially under acceleration load.
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