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      03-12-2018, 11:44 PM   #30
SeanWRT
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Drives: E90 M3 & F87 M2
Join Date: Sep 2015
Location: Shanghai

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Quote:
Originally Posted by AGM2 View Post
Quote:
Originally Posted by Saphirschwarz View Post
I'm taking delivery next week and i'm sure it will stay stock too... Time will tell, of course, but when i heard an MPE M2 cold start i know i couldn't bear that horrid chaotic farming tractor sound every morning... then again, time will tell...
The M exhaust if you keep the valves close all the time the sound is more quiete than the stock
And if you push sport without open the valves sound deeper and you get the bubbles like the stock exhaust + no Drone!!! At 3k rpm
No, things are exactly the opposite.

MPE valve closed is slightly louder than stock. And in s/s+ where factory valve opens, stock exhaust sounds much deeper than MPE valve closed. And there is a little drone at 3k even when MPE valve closed, as most reported.

Where stock exhaust sucks big time is being muted at upper rev range, the same goes to most of other turbocharged engines today. The best would be MPE track mode all the time, but not everyone can live with that loudness though.
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