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      09-29-2017, 12:50 PM   #2
bmw22915
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Drives: 440xi GC
Join Date: Mar 2017
Location: Colorado

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If you're looking for a deeper rumble, the downpipe will not give you that result as least imo. I just had my downpipe installed yesterday and it gave the car a slight rasp to it with about 30% louder exhaust sound. Might be different for you though since I am on stock muffler and Dinan midpipe (also b58 engine).

Hopefully others can agree or disagree with me to give you more feedback