MY OPINION:
The newer ignition systems put out all the spark you need when new. The plugs and wires are replacement items - I got the Champion platinums and Crane wires expecting them to last longer - and they are already past the stock stuff's lifetime (I have close to 75,000 miles on my PT).
As to Irridium plugs - HYPE.
The only way you'll see a performance benefit is if your current parts are below par and you restore spark to where it oughta be.
The above is MY OPINION.
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\'05 Limited Turbo Lite, (Silver, of course)4-wheel ABS, Sunroof, Spoiler, E&G Classic grill, K&N FIPK, BTG duals, rear lowered 1.5\", LED washer lights, $20 catch can, Aoogah horn, Weatherflectors, Sunroof Deflector, Fuzzy Dice, rear logo flames, rear pinstripe graphic, Gen3 Taillights, rear sway bar, hood struts, Strut bar.
Traded in \'02 Silver Touring Edition w/87,000 miles
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