🔥 E3 Spark Plugs E3.74 Premium Automotive Spark Plug: Unleash Your Engine's Potential with DiamondFIRE Technology! (Pack of 1) Review

Clear difference to my Chevy 5.3L V8. More power, better MPG - all this appeared after installation. The original OEM spark plugs looked really bad after removing them, so I'm glad I bought and installed them. PS Remove the fender on the passenger side for easier access to the plugs.

There was a cracked spark plug that sometimes misfired. I installed them and not only did it solve my problems, I found that the performance was much better. It may be due to the fork that broke before, but I immediately noticed a clear difference. The truck runs smoothly as always and the MPG has increased. Definitely recommend.

I was going to wait a few weeks before reviewing them. I use my personal f150 for work and I got close to 100k so I looked at some plugins and decided to give them a try. They increased my mpg by 2.5. It may not sound like a lot, but I drive my truck 200 miles a day. These plugs are great. I hope there are no problems with life spam

Skeptical about them from reviews and videos on YouTube. These clowns just didn't fit right or got the wrong size. I had to double check the first size I made when I found a smaller tool to ENSURE they were correct as the original tool was long and difficult to reach. Just pull it all the way down, don't do it too tight. I can say that the car is picking up speed faster, I'm not crazy about it, but YES, it was important. By the way, my 2017 R/T 392 charger had NGK R spark plugs.

Lots of reviews for and against this product but I was recently disgusted that the service station was trying to bill me for FoMoCo forks and decided it was time to get back to work with mine . I'm glad I did. I learned 2 things: 1) The Ford Coyote 5L engine is the easiest engine to change spark plugs ever! 2) These plugs are working great so far. By doing nothing on the dyno, I feel a steady improvement in my acceleration and a slightly lower rpm at cruising speed, which I attribute to the…

I drive a 2012 f-150 3.5 ecoboost. It was starting to feel sluggish. Sometimes the launch took a second, other times the throttle response was slow. I argued between them and Bosch Iridiums and just decided to go with them. While waiting I decided to look for people who have experience with this (I know I should have done this before) and a lot of people on the forums are advising people to stay away from them. Don't let that fool you. If you look closely you'll see that those people telling…

So far so good, 2016 Ford Fiesta set to automatic. It's been a few weeks now and the car drives a lot better, seems to have more power and has helped with gearbox issues where my car was struggling to shift on time and fuel economy seems a lot better too. Have it in collaboration with Wix's new air purifier. I have to say that when I first put them in when the car was still hot, I put them in too tight and when I first started the car after the 1st time after fitting the car has vibrating like…