Thread: Spark plugs?
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Old 05-20-2007, 04:33 AM
minimark minimark is offline
Y Rated - 186 mph
Join Date: Dec 2006
Location: Winston-Salem,NC
Posts: 1,758

Non S... The main reason for using a colder plug for a reduction pulley in an S, is to take heat out, that the increase in air flow creates. Just my 2cents.
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