Spark plugs...what to get.

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Jun 13, 2004 | 01:55 AM

rustokman

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Joined: Dec 2003

Posts: 372

From: Encinitas CA

Car Info: Black 03 WRX

Spark plugs...what to get.

I need new plugs for my 03 wrx. What are advantages/disadvantages to going "colder". Which ones should i get?

Jun 13, 2004 | 06:39 PM

DJTEN4

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Posts: 916

From: Woodside, Cali

Car Info: 03 yellow wrx

i went with one step colder, but i think copper works just fine or better, i am not really sure though, bump so we can get some smart people to tell us what is right

Jun 13, 2004 | 07:19 PM

mexicanpizza

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From: ...a craphole in No.County San Diego

Car Info: MMVI AW WRX STI

If you're running significantly more boost...get one step colder. NGK coppers (BKR7E) or iridium (BKR7EIX) are both good. If you're mostly stock, just get the OEM NGK platinums (you know they last 60k right?)

Jun 13, 2004 | 09:16 PM

DJTEN4

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From: Woodside, Cali

Car Info: 03 yellow wrx

whats the difference btw copper and iridium? which gives a bigger boom?
i am running iridium in my car right now, but i dont really know which is better