Quote:
Originally Posted by themightyshrek
Better in which way? Louder? Yes. An unpleasant metallic noise, very close to no name no cat exhausts.
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With the valves closed, the MPE offers a much deeper purr than the stock exhaust without being any louder. I find it very enjoyable when just cruising around.
With the valves open at low RPM, it has a deep menacing growl typical of BMW inline-6 engines which turns into a race car like howl at higher RPM. It is indeed quite louder than stock with the valves open. In Sport+, the burbles on overrun sound like riffle shots that can startle bystanders, which is sometimes funny but also a bit obnoxious.
Interestingly, the MPE on my M4cs sound quite different than it did on my 2015 M4. The exhaust sound is much cleaner and deeper, with less rasp overall and less farting on upshifts and liftoff.