BORLA 400496 ProXS Muffler Instruction Manual

Introduction

The Borla 400496 ProXS Muffler is a high-quality, T-304 austenitic stainless steel muffler designed for universal application in both import and domestic cars and trucks. This muffler features a 2.5-inch center inlet and 2.5-inch center outlet, with a 4-inch by 9.5-inch oval body that is 14 inches long, resulting in a 19-inch overall length. Its reversible design and notched necks facilitate clamp-in installation, offering a durable and performance-enhancing exhaust component.

Safety Information

Please read and understand all safety warnings and instructions before installing or operating this product. Failure to do so may result in serious injury or property damage.

• Professional Installation Recommended: Installation of exhaust components can be complex and may require specialized tools and expertise. Professional installation is highly recommended.
• Hot Surfaces: Exhaust systems become extremely hot during operation. Allow the vehicle to cool completely before attempting any installation or maintenance.
• Eye Protection: Always wear appropriate eye protection to prevent injury from debris or chemicals.
• Respiratory Protection: Work in a well-ventilated area to avoid inhaling exhaust fumes.
• Secure Vehicle: Ensure the vehicle is securely supported on jack stands or a lift before working underneath it. Never rely solely on a jack.
• Proper Tools: Use only the correct tools for each step of the installation process.

Package Contents

Verify that all components are present and undamaged before beginning installation.

• Borla 400496 ProXS Muffler (Quantity: 1)

Setup and Installation

This section provides general guidelines for installing your Borla ProXS Muffler. For specific vehicle applications, consult a professional or a vehicle-specific service manual.

Pre-Installation Checklist

• Ensure the vehicle's exhaust system is cool.
• Gather necessary tools: wrenches, sockets, cutting tools (if needed), exhaust hangers, and 1-inch wide band clamps (Borla part number 18325 recommended).
• Wear safety glasses and gloves.

Installation Steps

1. Prepare Vehicle: Safely lift and support the vehicle using jack stands or a hydraulic lift. Ensure sufficient clearance to work under the vehicle.
2. Remove Existing Muffler: Carefully unbolt or cut the existing muffler from the exhaust system. Take care not to damage surrounding components.
3. Position New Muffler: The Borla ProXS muffler features a reversible design, allowing for flexible installation. Position the new muffler in the desired location, ensuring proper alignment with existing exhaust piping.
4. Secure Connections: Utilize 1-inch wide band clamps (Borla 18325) to secure the notched necks of the muffler to the exhaust pipes. Do not fully tighten clamps yet.
5. Check Alignment and Clearance: Verify that the muffler is properly aligned and has adequate clearance from the vehicle's chassis, suspension, and other components. Adjust as necessary.
6. Final Tightening: Once satisfied with the alignment and clearance, fully tighten all clamps to ensure a secure and leak-free connection.

Operating Characteristics

The Borla ProXS muffler is designed to offer a refined yet noticeable exhaust note. Users can expect a deeper, more aggressive rumble at idle compared to stock mufflers, while maintaining a relatively quiet profile during cruising speeds. The design aims to reduce exhaust restriction, potentially leading to improved engine responsiveness and a more lively feel, especially during acceleration. The sound profile is generally considered mild, providing an enhanced auditory experience without being overly aggressive or prone to excessive drone.

Maintenance

Regular inspection and maintenance will ensure the longevity and optimal performance of your Borla ProXS Muffler.

• Periodic Inspection: Annually or every 10,000 miles, inspect the muffler and all exhaust connections for signs of corrosion, cracks, or damage.
• Check for Leaks: Look for black soot around connections, which indicates an exhaust leak. Tighten clamps or replace gaskets as needed.
• Secure Mounts: Ensure all exhaust hangers and mounting points are secure and free from excessive wear.
• Cleanliness: While not strictly necessary for function, cleaning the exterior of the muffler can help maintain its appearance, especially in areas exposed to road grime.

Troubleshooting

If you experience issues with your Borla ProXS Muffler, consider the following common problems and solutions:

• Unusual Noises (Rattling, Buzzing): Check for loose clamps, contact with other vehicle components, or internal muffler damage. Ensure proper clearance.
• Exhaust Leaks: Inspect all connections for tightness. Apply soapy water to connections while the engine is running (cold) to identify leaks by bubbling. Tighten clamps or replace worn gaskets.
• Excessive Drone: While the ProXS is designed to minimize drone, some vehicles or exhaust configurations may experience it. Ensure proper installation and consider adding a resonator if drone is persistent and bothersome.
• Reduced Performance: Verify that there are no exhaust leaks or blockages. Ensure the muffler is correctly installed and not causing excessive back pressure.

Specifications

Warranty Information

Borla products are backed by a manufacturer's warranty. For specific details regarding warranty coverage, terms, and conditions, please refer to the official Borla website or contact their customer service directly. Keep your proof of purchase for warranty claims.

Support

For technical assistance, installation questions, or product support, please contact Borla customer service through their official website or authorized dealers. Have your product model number and purchase information ready when contacting support.