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Old 02-25-2011, 08:52 AM   #49
Motor City Madman
Focus Jr. Enthusiast
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Join Date: Aug 2009
Fan#: 67832
Location: Motor City, MI
What I Drive: 2009 silver SE Coupe

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I can get the AR 103s from Advance Auto Parts online for about $9 with a 20% discount coupon and pick them up at my local store and they are in stock. Bottom line, can you actually feel this 4-5 hp increase? I have a stock '09 with only 11k miles on it. If there is a somewhat noticable difference, then I'd do it. What do you think?
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