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Old 01-21-2013, 03:52 PM   #7
FR-S Matt
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Join Date: Nov 2012
Drives: 2013 Ultramarine FR-S MT
Location: Round Rock, TX
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This comes straight from Perrin's blog:

"The stock exhaust system consists of a header, overpipe, front pipe, midpipe and muffler section. For now we will skip over the header as this isn’t something we plan on making right away. Starting from behind the header, every piece of the stock exhaust is made from tubing that measures 2.118″. That includes the overpipe, Midpipe and muffler section before the muffler. This great room for us as there is room to improve."

I'd replace it if I were you.
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