Thread: F80 M3 / F82 M4 exhaust resonator delete and straight pipes
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      07-01-2014, 06:26 AM   #8
BMWJ
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Drives: 2011 E92 M3
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Quote:
Originally Posted by jackkk View Post
Yo'd better delete the cats from the mid pipes.
agreed - this not the resonators in my experience
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