[greye93]

Hello,

I own a 2009 N52 328i E93 and am very interested in upgrading to a quad tip exhaust.

What's the necessary steps particularly for quad tip. Does the entire bumper need to be replaces, since I don't believe this model has a removeable defuser, but idk no much. Any ideas would be great thx.

I'm also really want a nice deep sound to it. I looked at the pe, but I cannot really find any, or if they were ever made in quad tip.

[colorado.e9x]

I too wanted a quad tip when I first bought my car. I slowly shied away from it.

In your case with the stock bumper here is what I would do if I were you. Muffler delete, run a pipe to the stock location with dual tips, run a pipe behind the bumper cover to the other side (there's not a lot of room btw), 90 degree bend, another dual tip. Youd have to make an identical cutout in the bumper as well.

[Kylee90]

This quad tip looks sick !