Thread: Best Cat-back exhaust systems for 335i Xdrive Coupe?
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      12-10-2012, 10:39 AM   #7
Radioactivem3
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Drives: 2009 e92 M3 Coupe M/T
Join Date: Jul 2012
Location: San Diego, CA

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My friend who ran catless dps on his 135 with 20k miles and broke a turbo. Do they not cause damage?
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