I have an '03 Eclipse with almost 38K miles. I am just now getting around to taking it in for it's 30K mile tune up. The factory plugs are still in of course, and I am wondering if it is going to make a difference if I have Platinum plugs put on? Will it make a noticeable difference in the performance, or just a difference in my wallet? Any suggestions? Oh, BTW, its a GS, 4Cyl.
Thanks