[neutron]

Has anyone here replaced their spark plugs with E3s? If so have you noticed any difference/improvements?

 

[slickracer]

I wouldn't recommend it. It the 3.5 I would use the recommended plugs and the recommended plugs only.

 

[wiswind]

They should list the exact number on the emissions sticker under the hood and also in the owner's manual.
As advised, use ONLY these plug numbers as not doing so is asking for trouble.
Those rear 3 plugs are too much trouble to have to go back in and change them out because a plug did not work out as expected.

 

[Deegaw11]

Don't know why when I click on my thread it links me to this one. I can't seem to view the thread I started.

 

[drzogg]

My son tried E3 plugs in his 2014 Mustand GT that he occasionally drag races....he found no improvement in anything. He's says it's a marketing hype.