what spark plugs are everyone using?
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From: driving the 10 second beast in ohio or running lightmods.net
what spark plugs are everyone using?
is everyone staying with stockers? what are the stockers? i think i heard they are $18 from the dealership and must be iridium or something 
They seem to work just fine for pretty much everything.
About $13 each at mitsubishiparts.net
Last edited by GST Motorsports; Jul 2, 2009 at 01:44 PM.
You can also look at HKS Super Fire Racing Spark Plugs (9 heat range) EVO X that are 1 heat range colder once you are 100+ crank HP over stock power levels. They worked great out of the box on my Stock turbo with full bolt ons but had hesitation above 23 psi on the GT30 turbo due to being at .028" to .030" gap! Make sure to check the gaps and don't run over .024", even the guys that should know better can overlook things like that. 
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Are there any NGK coppers that will work on the X? I probably replace plugs more often than I need to, and was wondering if there are cheaper alternatives to the iridiums that will work just as well on a car with not too many mods.
I'm sure company's will develop spark plugs here soon, especially NGK. I think thus far with bolt on's I'd stick with the stock NGK's. I doubt right now you will find a better sparkplug on the market.
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looking at the HKS Super Fire plugs i see s and m series. since there is no plug listed for us in the s series i assume everyone is going with the m series. what are the differences between the two?
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From: Dirty Jerz
You can also look at HKS Super Fire Racing Spark Plugs (9 heat range) EVO X that are 1 heat range colder once you are 100+ crank HP over stock power levels. They worked great out of the box on my Stock turbo with full bolt ons but had hesitation above 23 psi on the GT30 turbo due to being at .028" to .030" gap! Make sure to check the gaps and don't run over .024", even the guys that should know better can overlook things like that.
