spark plugs on a 07' attack

[64ssmax]

I have the stock plugs and I was going to change them out this weekend. I see alot of people running cr10ek or cr10ec. Is this correct? What brand are those? And why does everybody swap out the factory ones for those?

brian

 

[radta7]

NGK CR10ek

 

[rxrider]

The 2 ekstra HP across the rpm range I guess. Yes it's true, it has been verified by SUPERTUNER (Freddie Klies) a member of this site. MAN I can't type
www.easterncycleperf.com

 

[64ssmax]

plugs

thank you guys!

brian