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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.
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...
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.
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.
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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.
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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.
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