I saw a show on hotrod tv, they did a feature on your E3 plugs. I love old
musclecars but my everyday driver is a 2007 dodge caliber. I live in Canada
and I put almost 100 miles on my car daily. It was time for a tune up and
decided to spend the extra money for a set of your E3s. At first I really
didn't notice a lot, but for whatever reason I seem to be getting another 60
to 75 miles on a fill up, and at the price of gas it really helps! Nice to
see a product that does what they say will do as a lot of products come and
go -- your E3s went beyond what I ever expected. So just a note to say thank
you and to say that your E3 plugs ROCK.

Kevin Atwater
Hamilton Ont Canada

Own a 1984 Mustang Hatchback with a 2.3L (non EFI) and C-4 trans which I
bought on Ebay. Car got 23mpg, but couldn't get out of it's own way. After
installing a set of E-3s and synthetic oil, the mpg was boosted to 26.5 and
there was a noticable increase in power!!!! Thanks!!! You made a believer
out of me.

Gary Steele

I have installed E3 plugs in three vehicles:

1930 Model A (350 SBC stock) resulting in faster starts, better manners during cold running, smoother idle, lower fuel consumption.

1979 Chevy LUV (stock 1.8) resulting in all of the above benefits plus better performance in the lower rpm range.

1962 Ford Falcon Wagon (Modified street 302) resulting in much smoother idle, usable performance at lower rpms than previously achievable, smoother running overall, an ability to idle the engine at a lower rpm than before.

The E3 plugs gave noticeable improvements in each vehicle immediately. I would strongly recommend this product to anyone wanting to get the most from the vehicle they drive. I tell everyone I can about them whenever the opportunity arises. This is a quality product!

Alfred Kramp

I have a 2003 Mazda Protégé 5 that is far from stock anymore. I am running a set of E3's and am getting 28 - 30 mpg depending on my right foot. I was getting 26 - 28 before. I also have a 1992 lifted Dodge Dakota 4X4 with a 318V8. I am also running a set of E3's. Can't complain with that choice either. My other truck is a 1950 Chevy with 355 HP GM Performance ZZ4 under the hood. I plan on dropping another 8 E3's into my rat rod when it's time for new plugs. I'm very happy with the plugs.

Prescott, Arizona

We have a 1997 Isuzu trooper with over 225,000 miles and were going on a trip about 2,000 miles long, and stock mileage is 14 to 17. After using your E3 plugs our mileage went up to 18 to 23 mpg depending on the driving hills or flat road. We love your plugs and are worth every penny, they paid for themselves just on this trip and more power too!


I just want to take a little time to thank you and your team for the excellent product. I run these plugs in my truck and the quality is untouchable. Today I put one in my son's quad and I am extremely impressed. It started right up and I can hear and feel the incredible difference. KUDOS to your excellence. Keep up the exceptional work. Thank you very much from my son and I for keeping our toys in great running condition.
Thank you


My name is David and I just wanted to write E3 Spark Plugs about their magnificent product and the spectacular performance it has provided to my 1998 Lawn Boy (2-Cycle) Push-Mower! My experience began one Thursday evening when I had family arriving to stay at my home that weekend. During the middle of mowing my lawn, the mower started missing terribly and puffing smoke out the air filter. Surely, I thought this was the end of my lawnmower since it was coming to the end of its life-cycle for this product as I have had it for over a decade. After attempting every simple repair to finish the remaining three-quarters of my lawn left to mow, I concluded that it must have been the "new" sparkplug of my old brand that I purchased just this spring in April. It was only the beginning of June. This means I only used my lawnmower approximately 6-8 times already, which isn't anything for a sparkplug and a regularly maintenance and tuned lawnmower.

Therefore, I went to my local Menards to purchase a new sparkplug for the lawnmower as the last possible resolution to my much needed repair. To my astonishment my sparkplug type was sold out and I needed a new sparkplug today, so I utilized the Menards sparkplug guide to find a comparable sparkplug for my Lawn Boy and it specified your E3.10 Spark Plug. Worried a little about the price, I reviewed the package and all the details that your produce provides and I was sold on the "Energy, Efficiency, and Ecology" that is on the back of your package. After getting home and removing the old sparkplug that was already "worn" and replacing it with your E3 Spark Plug, it delivered everything that was promised on your package!

My Lawn Boy took off like it was brand new, with just one pull (instead of at least 3-4 with my old sparkplug), I also had to turn down the throttle/choke to nearly half as the mower had way too much power, and I can mow my entire yard on one tank of gas in the lawnmower instead of 1.5 tanks! It's incredible and my wife loves that I don't smell like "lawn-mowing" anymore when I come inside like I use to with the old sparkplugs...You can barely even smell or tell I finished mowing my lawn! This product is incredible and I normally never write testimonials. But, your sparkplug has made my old 1998 Lawn Boy into a brand new lawnmower for only around $7! It's unbelievable and keep up the great work, I have been telling all my neighbors, friends and colleagues about your sparkplug for their lawnmowers!

Thanks for not making lawn mowing a dreaded chore anymore!


E3 was the sponsor for the Hot Rod National's show & Dyno Challenge held in Lincoln NE. Before going to the show I added 8 gallons of 110 octane Race fuel to my tank with hopes of getting more than 300Hp at the R/W from my Stock 69 Impala w/427Ci. "311Hp was the best of 2 pulls." Satisfied that I reached the 300+ HP mark, the next chance to run my car on the Dyno was the Hot Rod Power Tour. I replaced my 5 year old standard plugs "that were burning the air/fuel mixture perfectly-according to the text book pictures." I installed the E3 plugs before starting the Power Tour. With a mix of 91 & 89 octane ethanol fuel in my tank - not the 110 octane mix as before, the Dyno showed 320Hp. That is an increase of 9Hp on lower octane fuel, and 7 F/P torque. The Dyno machine was the same unit used in Lincoln, outside & engine temps were within 8 degrees of the Lincoln Dyno pull. I'm SOLD on E3's!


I just installed E3 plugs in my street rod (1940 Chev. 350 engine). What a BIG difference those plugs made. Probably the best product that I've purchased that did what they said they would. OUTSTANDING product.


I purchased E3 plugs in Feb. '09 for a trip I planned to with my pick up truck, 2001 Dodge Dakota 4.7L. I didn't get a chance to replace the plugs before leaving on the trip, truck was averaging about 18.5-18.7 which was pretty much normal for it at highway speed. I took the plugs with me & changed them while I was at my destination. A week later was back on the road again & to my surprise at the first fuel stop, after approx. 140 miles the gas mileage calculated out to be 19.6 MPG. So, after filling up & back on the road drove for approx. 300 miles & filled again this time the MPG was averaging 19.9-20.1 MPG. I must say overall to date the gas mileage has significantly improved since changing plugs over to E3's.


I just wanted to say THANK YOU to all at e3 Spark Plugs for breathing new life into my sports car!! I read about e3 in this months Hot Rod magazine to which I subscribe. I immediately called my local Shuck's, picked them up then rushed home to install them today.

I can honestly say that, although I was a bit skeptical of the advertisement, when I stepped on the accelerator of my 1988 300zx turbo, it was like I was driving a true race car. Although my Z has 164,000 miles on it, it is well maintained. However after changing from the stock plugs, any barely discernable rough idle has disappeared, the engine runs noticeably smoother and certainly feels like it develops a few more ponies which also affects the output of the turbo. I suspect I will be squeezing a bit more miles per gallon which I also am very happy about !

You have a customer for life and I plan to tell all of my friends about e3.


Installed a set of your plugs in my Mustang. You would not believe how well it runs. Just a slight tap of the gas in 1st will light them up. Not like that before. Great spark. I’m going to put a set my wife’s Camry soon.


our spark plugs took my car which I thought was going to need a major tune up and made it run perfectly, in fact better than I have ever seen it run before. From now on I will never buy any other plug. You just made a life long customer.

Chris L.

I have a Poulan chainsaw that I was problems starting. I tried a new Champion spark plug, but it wasn't any better. I saw your plugs at Home Depot and thought I would try it. Well... my chainsaw started like it was brand new. Not only did it start easily, but there wasn't the usual cloud of smoke.

George Lam

These plugs eliminated the pre-ignition ping I've been battling for over a year and the overall performance was significantly enhanced.

John Barrett,
Stillwater, OK

The Electrode design featured on these E3 spark plugs is innovative and promotes a more efficient feul/air charge.

Mike Ulibarri
Morenci, AZ

I'm getting a 4.7% gas mileage increase from the E3 plugs in my Dodge Dakota 4.7L V8. It seems to have more power too. I love the new E3 plugs.


I just wanted to thank you for a superb product. I recently installed your spark plugs into my 1997 Chevy K1500 Suburban. It had a chronic O2 problem giving me failure codes on my ECU that could not be resolved. Your plugs improved the burn so much that my ECU codes have cleared themselves!!! I will recommend your plugs to EVERYONE I can and I have installed them on all my vehicles.