2015 BMW M4 can sound good! It needs some tuning (Bootmod3 here) and an aftermarket exhaust system or you can simply leave the stock exhaust and get a mid-pipe and delete Cats.
Here, BMW M4 had VRSF High Flow Mid Pipe and part of Akrapovic exhaust system (Muffler). I had to remove the other portion due to resonator going bad. It also had a custom De-cat downpipe installed and BMC Air Filter installed. All in all, this car had about 530HP and 560Tq.
M550i on the other hand sounds good from factory, although it is very quiet (resonator delete is in the works).
Негізгі бет Автокөліктер мен көлік құралдары Tuned BMW M4 Exhaust vs Stock BMW M550i Exhaust
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