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Eisenmann or the BMW Performance exhaust systems?
Which is louder in decibels the Eisenmann or the BMW Performance exhaust systems?
For the sound videos, I can't tell any difference in loudness but the BMW system seems to have a more pleasing lower frequency.
To be fair, it does look like the Eisenmann has two versions one with a down pipe resonator and one without it to change to frequency and loudness. Am I correct on this?
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