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      06-24-2016, 12:12 PM   #20
dinonz
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Drives: 2016 M3 MWM ZCP
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Quote:
Originally Posted by CaryTheLabelGuy View Post
There isn't a difference guys. What anybody is hearing is the difference between a broken-in exhaust and a non-broken-in exhaust. The 2016's might also be manipulating the exhaust valves differently than a 2015 on an older I-step firmware. The exhaust is physically the same and have the same part numbers.

I've personally heard a 2015 vs. 2016 non-ZCP. Both of which had more than a few thousand miles and they sounded identical.
That would be a shame, because the 2016 in Nick's video sounded better - so breaking in the exhaust makes it sound worse?
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