Iridum vs. copper plugs/ pros & cons?

[mr_esmit]

Just like the title states.

[itsmatt33]

i believe iridum lasts way longer

[josh160]

That is true

[hercfe]

FWIW i ran champion copper plugs in a colder range on several different 400+ whp builds. They are way cheaper to replace after track days. If you want longevity and aren't going to make big power, get iridiums. and change them every 25000 or so. if you're going to make big power and need to do required mx more often, get something cheap. I also ran conventional dino oil a filter can with replaceable element filters in each of those cars. It is way better for bottom end builds and turbos, and way cheaper to replace twice a month during track season. All in all, its up to you. Iridium or copper is just fine, and neither will yield any better result than the other on the same engine. I wouldn't go with platinum is the only thing. Turbos seem to kill platinum plugs more often.

[vintagespin]

Copper plugs give a better spark, but you must replace them every 5,000. They are very cheap though. like < $2.00

[pit viper]

I like copper plugs. Cheap, and I just make them part of my basic maintenance.
I've had the best luck with copper, it seems.

[dougyfresh]

read this: http://www.audigeeks.com/forums/index.php?topic=3036.0

[Undisputed]

Good read and I go with the copper also.