How to Install Magnaflow Street Cat-Back Exhaust (15-17 GT) on your Ford Mustang

Step 1. Begin removing the OEM exhaust system by loosening the clamps located in front of the resonator. Next working front to rear extract the hangers from the rubber insulators and remove the OEM system. Retain insulators and clamps as they will be used to install the new system.

Step 2. Begin installation of the new system by loosely attaching the X-Pipe Assembly to the outlets using the OEM clamps. Leave all clamps loose until final adjustment.

Step 3. Next attach the Extension Pipe Assemblies to the X-Pipe using the supplied 3.00" clamps and fitting the hangers into the rubber insualtors.

Step 4. Finish the initial installation by fitting the Muffler Assemblies onto the Extension pipes using the supplied 3.00" clamps and inserting the hangers into the rubber insulators.

Step 5. Once a final position has been chosen for the new exhaust system, evenly tighten all clamps from front to rear using the torque specifications on page one of the instructions. Inspect all fasteners after 25-50 miles of operation and re-tighten if necessary.