Originally Posted by clnzx4
Question.. back on these spark plugs..
Which one would be the best one:
I personally would go with the cheapest, you just want an oem replacement, nothing crazy. Motorcraft is what was designed to be in our cars unless you make the modifications that make it necessary to upgrade. At that point you would probably need to upgrade your tune. We (owners of duratec vehicles) have the coil on plug system which can pump out a lot of good efficient spark that is plenty good for any oem plug... even most forced induction builds.
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