Thread: OEM exhaust mod
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      11-02-2016, 11:52 PM   #1
qJai
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Drives: 228i Msport Prem RWD MT
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OEM exhaust mod
Read alot about this on the m3 and f30 forums.

Basically, opening up the muffler and sealing the holes in chamber 1 and 3 and resealing. People reported it sounded like a slightly louder MPE.

Anyone try this?
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