Iridium 4Pieces Ignition Racing Upgrade Replacement Parts for Ignition Parts Review

This upgrade for my automotive ignition system delivered on performance .The Iridium spark plug design is certainly an unexpected addition that I am very pleased with. i noticed a difference in my car's speed and pick-up immediately. The only minor downside was the installation process; it took a little longer than expected. However the end result was worth it for the quality and reliable performance I received..

They replaced original Denso spark plugs. While mileage can be a common indicator, the spark plugs were only changed yesterday, the first thing that struck me is how much quieter the engine has become. I have no doubt that this in itself indicates a significant increase in performance.