I agree, I am running 9-10# of boost and have been for over 30,000 miles. I have 112,000 miles on my car with the ORIGINAL COPs and never had an issue.Nay. Overpriced, and the OE are more dependable. Also, the engine has no use for the hotter spark UNLESS you are running some high boost and having a problem with spark blow-out or distortion. Even then, I would first try different, cooler range plugs.