Go to the rear of the car behind the rear wheel to remove the bolts connecting the two sections of the exhaust (The Center/Mid-Pipe & Muffler Portion).

You will need to use one 14mm wrench and one 14mm rachet to remove the hardware from the center pipe to the muffler to disconnect it.

In some cases you will not need to reuse the rear hardware or exhaust gaskets, if your aftermarket exhaust does or does not come with one.