Has anyone ever used the diamondfire e3 spark plug. I want to go ahead and replace my plugs. i have always just used NKG but i figured i would see if theres were any better. the only thing is i have heard that if you use the plugs you need to use the dimond fire e3 spark plug wires. of course that would be a problem due to the COP. any ideas or sudgestions?

 

Are you sure they are available for your 3V 5.4L? I don't think they are.

 

diffrent truck, its goin in the 4.6 work truck i have

 

I've always felt that the "super advanced" spark plugs were a little on the snake oil side. I'd stick with Motorcraft and save the cash personally.

 

just seenin whats out there and if there any better

 

anybody use them?

 

My room mate used them in his 99 TA and loved them. He is on his second set now