Originally Posted by wickedgreyzx3
I certainly would say 5hp is a noticable gain.
And if you would have read the original post you wouldn't be making idiotic comments and making yourself look like a fool.
And also, while we may not be the majority there are A LOT of people running copper spark plugs in the Focuses now.
I've tried autolite plats for 20k VS autolite coppers for 15K and overall .. coppers give my car more pep.
A few years ago, I went to the gym for several months and lost 30 pounds. That must be worth about 1% more fuel economy in the city.