Flowmaster 17405 Force II Cat-Back Exhaust System Instruction Manual

1. Introduction

This manual provides detailed instructions for the installation, operation, and maintenance of your Flowmaster 17405 Force II Cat-Back Exhaust Kit. This system is designed for 2005-2010 Dodge Magnum RT, Charger RT, and Chrysler 300C models equipped with the 5.7L engine, including AWD variants. The Force II system delivers a mild to moderate sound level, enhancing your vehicle's exhaust note while maintaining a comfortable interior sound.

2. Safety Guidelines

• Always wear appropriate personal protective equipment (PPE), including safety glasses and gloves, during installation.
• Ensure the vehicle is securely supported on jack stands or a lift before working underneath. Never rely solely on a jack.
• Allow the exhaust system to cool completely before beginning work to prevent burns.
• Use proper tools and techniques to avoid injury or damage to components.
• Keep a fire extinguisher nearby when working with automotive components.

3. Package Contents

Verify that all components are present before beginning installation:

• Flowmaster 17405 Cat-Back Exhaust System (includes pipes, mufflers, and tips)
• Hangers and Hardware for Installation
• Specially Tuned Resonators (integrated)
• Super 40 Series Performance Mufflers (integrated)

4. Installation Instructions

This exhaust system is designed for a direct bolt-on installation after the factory catalytic converter. Professional installation is recommended.

4.1. Preparation

1. Park the vehicle on a level surface and engage the parking brake.
2. Raise the vehicle to a comfortable working height using a lift or jack stands. Ensure it is stable.
3. Apply penetrating lubricant to all rubber hangers and exhaust fasteners to aid in removal.

4.2. Removal of Factory Exhaust

1. Locate the connection point of the factory exhaust system after the catalytic converter.
2. Carefully remove the bolts or clamps securing the factory exhaust.
3. Support the exhaust system as you remove it from the rubber hangers. It may be necessary to cut the factory exhaust into sections for easier removal, especially if working without a lift.
4. Retain any reusable hardware or rubber hangers if not supplied with the new kit.

4.3. Installation of Flowmaster System

1. Begin by installing the front pipes (H-pipe or X-pipe section) to the factory catalytic converter outlets. Do not fully tighten clamps or bolts at this stage.
2. Attach the Super 40 Series mufflers to the front pipes, ensuring proper alignment. Secure them loosely with the provided clamps.
3. Connect the over-axle pipes to the mufflers and route them over the rear axle, engaging them with the factory rubber hangers.
4. Install the tailpipes and polished 304 stainless steel tips. Adjust the tips for desired appearance and clearance.
5. Once all components are in place and properly aligned, begin tightening all clamps and bolts from front to back. Ensure all connections are secure and leak-free.
6. Check for adequate clearance between the exhaust system and all vehicle components (driveshaft, suspension, fuel lines, etc.). Adjust as necessary.

5. Operation and Sound Characteristics

The Flowmaster Force II Cat-Back Exhaust System is engineered to provide a mild to moderate exhaust tone. This means you will experience an enhanced, deeper sound compared to the factory system, particularly under acceleration, without excessive drone during cruising. The Super 40 Series mufflers utilize Flowmaster's patented Delta Flow technology to deliver this signature sound.

For a visual overview of Flowmaster's manufacturing process and product quality, please watch the video below:

6. Maintenance and Care

• Regularly inspect all clamps and hangers for tightness and wear. Re-tighten as needed, especially after the first few hundred miles of driving.
• Check for any signs of exhaust leaks, such as black soot around connections or a noticeable change in sound.
• Clean the polished stainless steel tips periodically with a non-abrasive metal polish to maintain their luster.
• Avoid driving over large obstacles that could damage the exhaust system.

7. Troubleshooting

• Rattling Noise: Check for proper clearance between the exhaust pipes and other vehicle components. Adjust hangers or pipe routing if necessary. Ensure all clamps are tight.
• Exhaust Leak: Inspect all connections for tightness. If leaks persist, a professional may need to re-seal or weld connections.
• Excessive Drone: While the Force II system is designed for mild drone, ensure all components are properly aligned and sealed. Verify that the system is compatible with your specific vehicle model and engine.

8. Product Specifications

9. Warranty and Support

Flowmaster products are manufactured to high standards. For specific warranty information and customer support, please refer to the warranty card included with your product or visit the official Flowmaster website. Keep your proof of purchase for warranty claims.