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Old 02-28-2005, 11:16 PM   #7
crazymechanic
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Join Date: Sep 2004
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Location: Rockville, MD
What I Drive: 2003 SVT Focus

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you can get the denso iridium plugs from c-f-m.com. I think it's around $50 a set. you might also want to look into a screamin demon coilpack and set of livewires from performance distributors. the coil puts out more power than the stock coil, and the wires a rather high quality, which will help your idle, startup, and smooth out your acceleration a good bit. there are some magazines that show a small HP increase from the coilpack and wires, and I know denso iridium plugs actually do produce more power/tq than stock plugs (been proven on other cars, but I don't know anyone who did a back to back dyno for plug comparison). if you do the coilpack, wires, and plugs, you'll spend around $200 total, and if you don't have a lead foot, your investment should pay for itself in increased gas mileage in about 2 years (yes, I did the math).
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