I agree the 3-series is not built for quiet. A friends 7 is amazing in that department. I prefer the loud exhaust note possible in the 335i. Overall have not noticed much difference from the E90 to the F30 by way of "noise" outside of the exhaust.
2015 F30 335i | M-Sport | Estoril Blue | Black Dakota | 6-speed | HK Sound | Cold Weather | Premium Pkg | Sill Decals | Coded
| 19" Style 442M Grey Orbit Staggered | M-Sport Brakes | MPPK | MPE | Front Splitter Black | CF Rear Spoiler | Black Grilles
Previous loves: 2013 F30 335i / 2009 E90 335i / 2007 E90 328xi