Anyone tried E3 (Diamond Fire) spark plugs? - Dodge Challenger Forum: Challenger & SRT8 Forums
Performance Modifications Want to talk about performance modifications for your Dodge Challenger? This is the forum for that. Anything from exhaust systems to power adders and everything in between. (Dodge Challenger Performance Modifications)

LinkBack Thread Tools Display Modes
#1 (permalink) Old 05-12-2009, 07:48 AM
Lifetime Premium Member
spencer60's Avatar
Join Date: May 2008
Location: Atlanta GA
Posts: 781
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
(Thread Starter)
Anyone tried E3 (Diamond Fire) spark plugs?

Seems to be a lot of buzz about these plugs, but was wondering if anyone has tried them and seen any difference. They aren't that expensive so if they really do give you another 5-7HP, that wouldn't be bad at all.

spencer60 is offline  
Sponsored Links
#2 (permalink) Old 05-12-2009, 08:36 AM
Lifetime Premium Member
SHANER's Avatar
Join Date: Nov 2008
Posts: 713
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Keep us posted

SHANER is offline  
#3 (permalink) Old 05-12-2009, 08:58 AM
Lifetime Premium Member
Grey Ghost's Avatar
Join Date: Feb 2009
Location: Oregon
Posts: 928
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
I e mailed High Horse Performance a while back and asked them about those plugs. They told me “they are junk”. It was then suggested to use NGK.

Grey Ghost is offline  
#4 (permalink) Old 05-12-2009, 09:11 AM
Senior Member
GTOGreg's Avatar
Join Date: Dec 2008
Location: Fremont, CA
Posts: 1,185
Thanks: 0
Thanked 2 Times in 2 Posts
Feedback Score: 0 reviews
Snake oil, spend your money elsewhere

'09 R/T Black, 6spd, 3.92 LSD **SOLD**

Skip Shift Eliminator | Custom Magnaflow exhaust | Mopar Stg II Coilovers | Hotchkis sway bars | Intro "Newstalgic" billet wheels 20X8.5/20X10

Other rides:
1967 GTO 400 4 spd
1969 Schwinn Stingray Krate 5 spd "Pea Picker"
2011 Jeep Grand Cherokee Hemi
2012 Ford Shelby GT500
GTOGreg is offline  
#5 (permalink) Old 05-12-2009, 09:21 AM
Lifetime Premium Member
FrankG's Avatar
Join Date: Feb 2009
Posts: 233
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews

Horsepower TV last week had a piece they did about upgrading a 5.7 Hemi Charger cop car, and they used those plugs. I reviewed the piece last night, and they claimed an 8hp gain in "previous tests."

Now, I don't believe everything I see on these shows, because I know they do their sponsors' bidding, and I didn't see the section where they tested these plugs, but I do remember seeing other shows where they tested inexpensive power adders like synthetic oils and plugs, and verified the results on the dyno... and while dynos may not lie, they certainly differ in the way they report performance...

As for me, I'm still using NGKs, and waiting to see if MSD will come out with a system for our dual-plug Hemis...
FrankG is offline  
#6 (permalink) Old 05-12-2009, 10:33 AM
Senior Member
Join Date: Oct 2008
Location: Skokie, IL
Posts: 482
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Send a message via AIM to Devil
It is snake oil.

There is only one spark, it can only travel from one location to another.

The E3's and other multi-tip designs are actually worse because they are impeding the travel of the combustion in one direction which can cause damage to a vehicle.

A good set of normal spark plugs, perhaps iridium, or a different heat range is better for a vehicle then the others style.


Forward, Together Forward

Ryan's Cars in Barns Blog and Pictures
Devil is offline  
#7 (permalink) Old 05-12-2009, 10:53 AM
Join Date: Feb 2009
Location: Middle, TN
Posts: 7,568
Thanks: 0
Thanked 4 Times in 4 Posts
Feedback Score: 1 reviews
I've seen reports on these as well. They were showcased on Horsepower as well as Gearz. Both shows claimed they added horse power.

However, I agree with the above that a spark will travel the path of least resistance. A spark plug isn't going to fire three different arcs just because there are more electrodes. The spark will only travel to one at a time. It's simple physics.

It is possible that these E3 plugs have a different electrode that may provide a slightly stronger spark, but until I see one in action under a slow motion camera compared to a standard NGK, I'm also going to say snake oil.

OR, back to back dynos showing more than a variance in HP.
Speedy! is offline  
#8 (permalink) Old 05-12-2009, 02:00 PM
Lifetime Premium Member
spencer60's Avatar
Join Date: May 2008
Location: Atlanta GA
Posts: 781
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
(Thread Starter)
If I remember right, the claim wasn't that you got multiple spark paths (which as said above wouldn't happen), but that the hole on the center of the plug (where the electrode tip would normally be) allowed the gases ignited by the spark to exit directly into the cylinder, instead of being blocked by the the tip and having to go around. Doesn't seem like a big deal, but you never know, sometimes small changes can have big effects.
spencer60 is offline  
The Following User Says Thank You to spencer60 For This Useful Post:
srt8-in-largo (11-02-2013)
#9 (permalink) Old 05-12-2009, 03:06 PM
Lifetime Premium Member
Brucer41's Avatar
Join Date: Sep 2008
Location: New Milford, Ct.
Posts: 3,218
Thanks: 54
Thanked 78 Times in 54 Posts
Feedback Score: 1 reviews
Send a message via Yahoo to Brucer41
Those are yet to been seen by an independent testing company that I can find. But just like Iridium plugs, NGK's, platinum plus and all the others were touted as snake oil as well until they had been around a bit and tested. At $400 dollars for a set of 16, I am in no real hurry to try them out for that 8 hp unless I see it for real.

2009 Challenger SRT8 (Hemi Orange Pearl)
Modern Muscle 426 Hemi Stroker
Arrington Performance Hemi 90mm Billet Throttle Body
Magnaflow TVS 2300 - Black Finish w/90mm Inlet
Arrington Magnaflow TVS2300 Direct Drive System
Kooks Long Tube Headers/ Kooks Catted Midpipes
And way too much to list here!!
Brucer41 is offline  
#10 (permalink) Old 05-12-2009, 03:17 PM
Senior Member
Join Date: Oct 2008
Location: San Antonio, TX
Posts: 108
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
I saw the same Horsepower TV episode so when it came time to change my plugs in my Tahoe I forked out the extra money for the E3 plugs. What sucks is my average miles per gallon has dropped a full mile from 15.3 to 14.2 and I'm made no other changes to the car. It is the only thing I can think of. A set of 8 plugs set me back about $60 including s&H.

Buckbev is offline  
Sponsored Links

  Dodge Challenger Forum: Challenger & SRT8 Forums > General, Performance, and Technical > Performance Modifications

Quick Reply

Register Now

In order to be able to post messages on the Dodge Challenger Forum: Challenger & SRT8 Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Similar Threads
Thread Thread Starter Forum Replies Last Post
Why do Hemi Engines have 16 Spark Plugs? Cuda340 General Challenger Discussion 3 12-22-2014 10:04 PM
Colder Spark Plugs for Supercharger Rales Forced Induction 8 10-04-2012 08:38 AM
Tightening Spark Plugs Cuda340 How-To, DIY and Tips & Tricks 1 09-02-2012 10:35 AM
11-12 6.4L 392 spark plugs set of 16 SP149212AC stevewhiteparts Steve White Motors 0 07-27-2012 08:10 AM
Spark Plugs ? akriegsfeld General Challenger Discussion 1 07-26-2012 08:34 AM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome