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      11-17-2010, 01:22 PM   #98
First Lieutenant
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Drives: 4 Wheels with a turbo
Join Date: Jul 2010
Location: Markham, Toronto

Posts: 359
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Does changing the midpipe to "high flow" cats on stock downpipe and axleback gets you any gains and sound? How much different would I be getting?

135i - AW
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