Review on Denso ITV24 Iridium Power Spark by Curtis Richardson

At the price, I was concerned that it might be a fake! nope! I drive a Focus St and he tuned a Ford Performance that needs two stage colder spark plugs. Online they usually cost between eighty and ninety for a set of four. I've had a lot of pops and hesitations on cold starts after driving 25,000 miles on the Densos that came with the tune and of course they got toasty. According to research on the Densos website, they recommend changing every twelve thousand miles. Changed it and it works perfectly again. And for this price, it's a lot easier to switch on a schedule.