You can, with the help of an exhaust fabricator, fit an M Performance exhaust from the larger engined BMW M235i onto your downsized 228i. It adds a lot of rasp to the quite smooth and muted standard setup, and if you like four-pot turbos you will definitely enjoy the difference.
The 228i owner showing off his car in the video below says it took around an hour and a half to fit. He says there’s no real difference between how his semi-custom setup sounds compared to what a 328i with the same exhaust system fitted from the factory.
The only difference is the 3-Series gets a single exhaust, whereas this setup has two. Oh, and you also need the rear bumper insert from the M235i, but it’s not horribly expensive, so this is a cool way to give your own 228i a little bit of extra character.
Via 2Addicts