http://www.zzperformance.com/zzp/products/prod_sparkpl ug.htmhttp://www.zzperformance.com/zzp/products/prod_sparkplug.htm
They are 4 heat ranges cooder than stock so that is 2 heat ranges cooler than the NGK TR6's
NGK Race only plugs $17/ set of 6 (4 heat ranges colder than stock)
here is what the say about them
When eliminating KR is top priority, when changing your plugs every 6k miles isn't an issue, or when you must push the limits of performance this is the plug to run. This is the plug we use in the ZZP GP and it performs. They come pre-gapped at .050-.052.
[ November 10, 2002: Message edited by: slacker69 ]</p>
They are 4 heat ranges cooder than stock so that is 2 heat ranges cooler than the NGK TR6's
NGK Race only plugs $17/ set of 6 (4 heat ranges colder than stock)
here is what the say about them
When eliminating KR is top priority, when changing your plugs every 6k miles isn't an issue, or when you must push the limits of performance this is the plug to run. This is the plug we use in the ZZP GP and it performs. They come pre-gapped at .050-.052.
[ November 10, 2002: Message edited by: slacker69 ]</p>
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