E3 Spark Plugs


Does anyone have any experience using these plugs? Do deliver what the performance and gas mileage as advertised?


One does not have to own them or have experience to know it’s a scam.
The E3 plugs, just like Pulse Plugs or anything else that claims to deliver the world, all use the same terminology to suck in the unwitting.

“Increases combustion pressures”, “faster burn”, yada, yada, yada, and always “independently tested by a university lab” somewhere. No doubt tested by a starving grad student who is only too happy to receive a stipend to help in “formulating an opinion”.

Just ask yourself this question.
How is that some podunk, hole in the wall operation and some obscure university somewhere are always the ones to come up with with these devices?

It’s never the car makers or the spark plug companies that have been researching this for years.


A waste of money and maybe worse.

All you need is enough spark to ignite the fuel air mix. More does nothing. Too little is a problem, but that should not be a problem if you are using the specified plugs and changing them at the specified mileage.


I looked at their website. It’s balogna. The physics send the energy through only the path of least resistance at the moment of discharge, and the heat energy of the spark is limited by the voltage and resistances to be the same whether there’s one electrode or two. We’ve had loooooooong threads on this very subject.

However, with due respect to my friend OK4450, plug makers and car makers do occasionally come up with better stuff. That’s how we got from copper core plugs with nuts on the centerpost to iridium. But when they do, it comes on their new models. They pay a penalty (in cash dollars) when their cars’ Corporate Average Fuel Efficiency is too high, so they take advantage of every technological edge that really works to get that number as high as possible. If the E3 plugs gained them even 1 mpg without a reliability tradeoff they’d be in their new cars.


As alluded to above, after market miracles have more investment in packaging and marketing than in performance. With a great deal of effort and expense and using some exotic equipment the only improvement in performance that I could gain over stock plugs in a small block Chevy engine was from trial and error select fitting of O.E plugs to get the open side of the electrode gap toward the center of the combustion chamber. And the improvement was neglible in normal driving.


When buying spark plugs ALWAYS buy an OEM plug or recommended replacement. These will be found in your owners manual, otherwise known as “the book that nobody reads”. Only air and fuel make power. Plugs just ignite the mixture. A hotter or bigger spark does not change the physics of fuel combustion and a non-OEM replacement plug will often find itself at odds with your car’s ignition system.