Removal of stock system: 1. Apply a penetrating lubricant liberally to all exhaust fasteners, hangers and rubber insulators. 2. Using a 15mm socket or wrench, disconnect the factory exhaust system at the four bolt flange located behind the catalytic converter. If the vehicle is not equipped with a catalytic converter disconnect the four bolt flange located approximately under the passenger side seat. 3. Remove the exhaust system from the rubber insulators and remove from under the vehicle.