Thread: Question about challenge street xpipe
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      01-31-2021, 12:47 PM   #2
Ervin87
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Drives: E92 M3 | B5 S4 | E30
Join Date: Aug 2012
Location: Santa Clara, CA

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The street pipe slip fits after your OEM cats. It retains the primary factory cars. Cutting of factory X-pipe will be required.
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