I would think that the people that claim amazing power/performance from their products are talking about being better than a champion N9Y that was the staple diet of most cars for about 20 years
http://www.caranddriver.com/features...toledo!-column Interesting read on F1 plugs
I admit to using Splitfire plugs for a few years in the series that I did with the BTCC, but only because I was given loads for nothing for running a logo !