M Sport Package Diffuser Question
How do the stock M Sport Package Rear Diffusers attach to the rear bumper/cover? I have a 528i without the M Sport Package and am considering adding an eisenmann exhaust with the dual exhaust. I have seen some installs where the existing bumper cover was simply cut for the 2nd exhaust tips. While this looks OK, up close it looks a little unfinished to me. I was thinking about adding the M Sport Diffuser (probably from a 550i to get the wider openings) to complete the install. Has anyone done this? Any other options to consider?