You may have noticed the ads in several leading magazines for these new spark plugs from a company called Enerpulse Incorporated. Enerpulse calls its device the Pulstar Plug, and it's making some fantastic claims about it. By incorporating what Enerpulse calls a "Pulse Circuit" in the plug, the Pulstar is supposed to deliver as much as 10 times more power than a conventional plug. Enerpulse says that equals 11 more horsepower in a Nissan 350Z.
So what's the catch? At 25 bucks apiece, we're talking 200 big ones (plus shipping) to outfit your V8. So before you spent that kind of money, we spent it so we could test them on a dyno and see if they work as advertised.