The right spark plugs
15 May 2011, 05:49 AM
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The right spark plugs
Hi all
Am I right in thinking that the pfr7b's are the best spark plugs for my 05 sti running 340 bhp???
Many thanks
15 May 2011, 06:32 AM
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It's supposed to be 1 grade colder for every 50-100 horsepower increased from standard, as a general rule, so yes, i would say so.
15 May 2011, 06:42 AM
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Thanx tazz
15 May 2011, 06:47 AM
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The right spark plugs
