Has anyone had any luck with those e3's and if not whats a good plug to put in?

 

please search, tons of threads on this,

 

I see no need to use other than what the JK comes with.
RE14PLP5 Champion Double-Platinum

They have been working just fine for me.

 

My experience is I prefer NGK plugs. I feel better running NGKs, and I have faith in them. When I get some reasonable miles on my engine, I will swap the Champions over to them.

Just personal preference. I have tried E3s in my wife's car. Only to develop a misfire due to them 300 miles from home. They did nothing for performance. Complete waste of money and time.

 

I have seen engines where those are the only brand that will work well.
I don't know what it is about them.

 

As Goody mentioned, I would stay away from the e3 plugs. I ran them for a while in the JK and did get a few misfire codes. Replaced them with the specified Champions and everything is running fine again. I did not notice any of the changes that the e3 plugs claim.

 

i got the e3 all i can say is save your money damm near $50 for 0= mpg 0= hp just get the stock plugs i dont think any plug is going to give up any real gain

 

I used the E3's. Made mine start throwin codes. I honestly could tell a difference in power before all that though. I run the stock Champions now.

 

X2, went back to Champs

 

Does anyone know what the stock champion part number is? I found - RE14PLP5 is that correct?

Thanks again for the replies.