Thread: Test pipes or no?
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      12-06-2012, 12:51 AM   #8
Top_Gear
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Drives: M3-E90-6MT
Join Date: Dec 2006
Location: Southern CA

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Wondering the same thing.

But this mod appears to be irreversible as it requires cutting the OEM exhaust. I am sure that at some point I will want to return the car to stock with no visible signs of "surgery" showing underneath
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