THIS IS WITHOUT THE BEST SPARK PLUG EVER MADE, YOU CAN FEEL THE DIFFERANCE RIGHT OFF BY THE SEAT OF YOUR PANTS ALONG WITH SEEABLE DIFFERENCE IN MILEAGE. THIS IS THE RACERS CHOICE AS YOU SEE WHILE WATCHING NHRA ON TV. THAT ALONE SELLS E3 TO ME. AGAIN MADE IN USA PRODUCT, IT JUST DOESEN'T GET ANY BETTER!
Verified purchase: Yes | Condition: New
What a difference these plugs made! I’ve known about them for years, but never had the opportunity to try them until know. Switched DENSO IRIDIUM plugs out for these E3 plugs on my 1997 Eclipse GSX, and am just floored at the difference they make. Power, throttle response and mileage have seen a definite increase. Buying for ALL my vehicles now.
Verified purchase: Yes | Condition: New
These have been the best plugs I've ever owned. My first set of these I bought in 2006 and they still work great. I have a long road trip planned and decided to change for ensuring I have no issues.
Verified purchase: Yes | Condition: New
These plugs were installed in a '73 454 with a 750 carb. I considered them to be a novelty, and was curious. (I kept the old plugs just in case...) The engine starts instantly and runs smooth. I checked the burn after 100 miles, the plugs looked the same as when I put them in, so I'll continue to check them. So far so good!
Verified purchase: Yes | Condition: New
I put a set in my 84 Nissan z24 and I can't believe how it pepped it up zero hesitation.these plugs are like bolting on horsepower and yeah...no joke I will only run these plugs!
Verified purchase: Yes | Condition: New
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