Originally Posted by Amini77
I believe the E91 is the regular 335i style exhaust but just made into quads. A lot of people do it for their 335's by just changing the tips or by swapping the back boxes out.
No, I think you misunderstood my question.
Now I buy the M3 OEM exhaust
And I have M style bumper like this
I don't want go go to the M3 look rear bumper.. Just want to change the rear diffuser for my original bumper..
to have something like this
In this way I get deep quite sound..
With Original M3 look from behind
It can be sean clearly that it's real not just Tips or so.. and more Horse power..
so the question Is.. Where exactly I can get this diffusor or any like this..