You want to know what works..go to the track and see what people who actually race and KNOW how to tune and know what plugs work use..majority of cars(if you can find any)WON'T be using Scampions=garbage!!!
I've gotten a bad one, once, many moons ago. Not changin my mind.
Can't quite afford 16 right now....but I want my current car to have them.
I like nickel plate but platinum is good.
