A rep came in trying to sell us these a while back, made lots of bold claims such as more power, better emmissions, longer lasting, cleaner and more complete combustion bla bla bla.... we quizzed him on the extra power claims and tbh he didnt have a clue and was clearly answering from a script that he had been taught rather than having any real knowledge.
we asked if we could test a set in a car we had on the dyno, he claimed they wont show a gain on a dyno but only on real world driving
We told him to get back on his unicorn and ride back to timbucktoo with his super powered spark plugs.