Copper plugs fire hotter thus a better spark than these exotic metal, overpriced plugs. This is why the copper NGK V-Power plugs and Champions are used by 90%+ people.

 

i saw the episode of hptv where they claimed 8hp from just a switch to the e3 plugs. right in the middle of a sip of suds. girlfriend threw a rag at me to clean the beer off her coffee table i laughed so hard.

in the 3.7, 4.7, 5.7 and 3.9, 5.2 and 5.9 for that matter standard coppers will give you all you can use unless you have modded to the point you changed compression. with every .5 in compression ratio increase you should go 1 heat range colder. when i was at wytech that was on the test.

 

Yep, they talk up anybody that sponsors the show. It's amazing some of the garbage they talk up. Even the TB spacers and Tornado's

Now this might be possible, but they failed to mention that the cooper plugs had 100K miles on them. Any new plug would have the same gains

 

I lost all respect for Stacey David when he pushed the Tornado on the product spotlight on his show one day. Shame, I always thought he was cool too...

 

Like LX and Hammer said, those guys on HPTV talk up anyone that pays them a little bit as a sponsor. They are bad about promoting products that have a big name, like flowmaster, E3, and RP. I like RP oil though!

Now if it was on Extreme 4x4 I would use it!!!