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are spark plugs all created equal?

2K views 9 replies 8 participants last post by  sick'r bee 
i feel like the answer is they are pretty much the same but thought i would ask, because i could swear i saw an indepent dyno that there some plugs that actually added like a 3 hp, but i dont know where i saw that and i really dont believe its.possible.

but if there are some brands or types that are better for certain reasons id love to know. i am going to be swapping my tb and lower intake mani so i figured of there are some better plugs id take advantage of having thw upper inatake mani off to replace them.

Iridium will give you better combustion, and last way, way longer. Not a great choice for spray or boost [there are better ones for that], but if you're NA it's the way to go.

--CC
 
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