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What effect does running "one step colder" plugs have on a N/A motor?

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Old 05-26-2004, 11:38 AM
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What effect does running "one step colder" plugs have on a N/A motor?
What effect does running "one step colder" plugs have on a N/A motor? Does it affect MPG, performance, longevity?

Thanks.
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Old 05-26-2004, 11:51 AM
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If you engine doesn't need it due to pinging,detonation, etc... Don't use them. You gain NOTHING and may get fouling of the plugs which leads to...
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Old 05-26-2004, 12:08 PM
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Here is some great reading on spark plugs for ya. Just click "Spark Plugs" obviously.

http://www.ngksparkplugs.com/techinfo/
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Old 05-26-2004, 12:28 PM
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I heard that "one step colder" works better with boosted cars rather than unboosted cars.

from:
http://maxmods.dyndns.org/
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Old 05-26-2004, 12:53 PM
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I haven't heard, but I have used both 1 step and 2 steps colder N/A and noticed no degradation in performance.

I did it because I use nitrous but I wouldn't recommend changing from the standard unless you have a specific reason.
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Old 05-26-2004, 02:01 PM
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Previous owner installed nitrous but pulled it due to a ticket. He left the plugs in there.
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Old 05-27-2004, 08:52 AM
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You thinking about joining the "SPRAY"? he he
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Old 05-27-2004, 09:40 AM
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Originally Posted by Jime
I haven't heard, but I have used both 1 step and 2 steps colder N/A and noticed no degradation in performance.
Hey Jime, Do you use copper plugs?
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