I've read for the last few months that the N20 28i sounded completely different in the 4 Series than it does in the 3 Series, but only now have I been presented with good YouTube video that lets you hear the difference. And what a difference!
I've always quite liked the noise my 328i makes, but missed the gruff, almost V8 soundtrack of my E90 330d. I feel the 428i has struck the best of both worlds!
I'd like to know why the sound is so different! Can anyone explain that?
Here's my 2012 328i...
Here's a 2014 428i...