plugs

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I'm just way too anal to put cheap parts on my car I guess, I have the Iridium plugs on my N/A, stock headed motor, and obviously they don't really offer any noticeable performance advantage other than you never really have to change them.

I think I just got suckered into that cool "hot red pepper" advertisement scheme.
 
The 5.0's tend to not like platnium plugs...especially bosch.

The ford/autoline plug honestly is the best plug to use. It's not a cheap part. It's just copper which costs less than the other rarer metal plugs
 
+1

Everyone should know at this point that copper is the best conductor of heat/electricity, therefore redering it the most beneficial choice in overall performance. Platinum is not as good of a conductor. However, you won't have to change platinum plugs near as much as you would with copper.

I run NGK coppers in my WRX, and Autolite coppers in my Mustang. :nice:

Stock WRX plugs are platinum, so I actually noticed BETTER performance when switching to the coppers. Night and day difference...go with coppers (for everything). :D