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M340 M Performance Exhaust - Detailed Sounds!
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03-21-2020, 10:39 AM
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CBBMWNA
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Quote:
Originally Posted by
themnmd
Curious any performance gains. My understanding is changes exhaust sounds only
Marginal, if anything. Mostly sound, I could only imagine its a little higher flow allowing the engine to breathe easier.
Appreciate
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themnmd
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