I had my copper plugs last much longer, especially if you gap them around .050" and aren't modded.
I got 22k~ out of AL103's which are a very cold plug that shouldn't have lasted more than two~ oil changes.
Plugs/wires/clean the throttle body/swap out of the cat...or just gut it. That's really simple.
Should fix everything. The 04+ cars throttle body's tend to gunk up too...they have a reusable gasket so you only need to unbolt it from the blower and remove the intake tubing, it's simple. 4, 10mm bolts and it's off after you unplug it. Most of the time that makes more of a difference than most of the stuff does, sadly.
