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Old 08-12-2011, 02:28 PM   #4
06 Focus ST
Focus Enthusiast
Join Date: Jan 2011
Fan#: 82805
Location: Cincinnati, OH
What I Drive: 2006 Black ZX4 ST

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Replace the "lifetime air filter" as soon as you get the car. When I first got mine it had 85,000 miles and the engine had a "tick". I put a Steeda SRI in and within 300 miles the tick was gone.
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