to answer your first question, BMW explains it in the owner's manual page 40, it shows a drawing of how to do it. Second I also just bought a set of M5 mufflers and I will be in the market for a diffuser but the M-sport bumper will take pretty much all the after market M5 style diffusers. I am going to wait and see what comes up in the owners market place on this blog.
Last edited by NV GUNS; 08-24-2016 at 11:44 AM..
|