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Old 08-25-2010, 04:34 PM   #1 (permalink)
redroadster10
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Join Date: Feb 2010
Location: pennslyvania
Posts: 52
Drives: 370z roadster 2010
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Default which would be best

i have the fast intentions 18" exhaust on my roadster and looking to get either test pipes or high flow cats. i am wondering which would be the best one for horsepower an along with some sound just not too much. anyone with info let me know
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