3. Of course, before the Corsa system can be installed, the stock system must be removed. That starts with removing the hangers holding on the factory “cat-back” portion of the system. Next, the section muffler and tailpipes were unbolted from the forward section of the stock exhaust system. Here’s where a lift and an extra pair of hands came in handy. The muffler and tailpipes comprise one, long assembly. Sure, the tailpipes could be cut to make removal over the axletubes less of a hassle, but with a little elbow grease and the help of a buddy, the system was pretty easy to remove intact.