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Sound Advice For Your Performance Exhaust Upgrade

We recorded the sounds of three different free-flow exhaust systems on our project car (a 1999 323i, pictured above sporting a Tri-Flo exhaust), as well as the sound of the original factory exhaust.

Note: The '99 323i has two resonators upstream of the muffler which deaden the exhaust note a little before it reaches the muffler. Depending on the configuration of the factory exhaust system on your BMW these exhausts may sound slightly different and/or a little louder, but this should give you a good idea as to how each system compares to the others.

If you have a default media player installed you should be able to play the sound files inline by clicking here. If not just click on the wave-form images below to download the sound file as an MP3.

Each exhaust system was statically recorded from 8 feet away.


shockwave 1999 323i exhaust note comparison


We also have sound bites of Tri-Flo exhausts on:

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