Originally Posted by Phanto///M
The tips are 4x83mm. I believe all of meistershafts tips are that. I have an e92 for the record.
Look at the third video in this thread. Seems to work fine with a diffuser.
Also look at the pictures in this thread. Most of them are running diffusers. Seems fine. I am in the process of ordering the exhaust and really need to confirm this