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Video: M135i cabin engine sound is generated / boosted (Active Sound like M5)
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01-04-2013, 07:22 AM
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NTTY
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Drives: G30 M550xi
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Originally Posted by
BM635
So will improving the speakers be as important as upgrading the exhaust?
Indeed. Go for AvantGarde Loudspeakers. German quality too.
Cheers.
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