Best Cat-back exhaust systems for 335i Xdrive Coupe?
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12-11-2012, 03:42 AM
Drives: 2009 335i Xdrive Coupe
Join Date: Jul 2012
Location: San Diego, CA
Thank you all so much! I am 90% sure I'm going with catless down pipes. Do they drone at all? It is safe to run a stage 1 cobb tune with the catless downpipes right?
Thank you again
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