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      09-04-2019, 05:16 AM   #23
Kooch
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Drives: 2016 M3 Sakhir Orange 6MT
Join Date: Apr 2017
Location: Boston South Shore

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Quote:
Originally Posted by eyeamgrewt View Post
Any benefit going with a single pipe vs the double, all else being stock? Is it just a different tone?
I was thinking the same thing. I'm interested in improving sound but a 3.5" replacing two 2.5" pipes has a smaller area for flow if my math is right? I would think this would increase restriction in the exhaust however slightly thus hindering performance a bit? May not be noticeable 3.06 sq in vs 3.125 sq in for 3.5" and two 2.5" pipes; respectively?
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