[mdeafallah]

Need some technical insight. Will the exhaust system from a 2012 M5 fit on a
2012 535I?

any gain in sound and performance?

Thanks in advance.

[Bmw doubles]

I'm sure it can be done but the sound won't result won't even be close.

1. A 6 cyl doesn't compare to the sound of an 8.

2. Even the n63 on a 550 won't sound like an M5 because of the way exhaust intersects. Its like a Honda with a fart can exhaust vs the wrx flat 4. 2 different ways the exhaust gas exits.

So a 6 vs 8 vs 550 vs M5 are too many variables to overcome to get it to sound even close. Performance gains for the N55? Doubt it. It will look super cool.

[ndinh]

Sound yes, performance no.
It's a nice upgrade considering the price of a used set of M5 mufflers. With the flaps open, you can definitely hear a difference. With the flaps closed, it'll sound like your stock 535i.