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The S55 engine, renowned for its performance in various BMW models, can be significantly enhanced with the installation of an Akrapovic exhaust system. This modification not only improves the engine’s sound but also boosts horsepower by over 20 HP. This guide will walk you through the steps necessary to install the Akrapovic exhaust on the S55 engine.
Understanding the Benefits of the Akrapovic Exhaust
Before diving into the installation process, it’s essential to understand why the Akrapovic exhaust is a popular choice among car enthusiasts. Here are some key benefits:
- Increased Performance: The Akrapovic exhaust is designed to reduce back pressure, allowing for improved airflow and a noticeable boost in horsepower.
- Weight Reduction: Constructed from lightweight materials, the Akrapovic exhaust helps reduce overall vehicle weight.
- Enhanced Sound: The exhaust produces a deeper, more aggressive sound that enhances the driving experience.
- Quality Craftsmanship: Akrapovic is known for its high-quality materials and engineering, ensuring durability and longevity.
Tools and Materials Needed
Before starting the installation, gather the following tools and materials:
- Tools:
- Socket wrench set
- Torque wrench
- Jack and jack stands
- Safety goggles
- Gloves
- Materials:
- Akrapovic exhaust system for S55 engine
- New exhaust gaskets
- Anti-seize compound
Step-by-Step Installation Guide
1. Prepare the Vehicle
Start by parking the vehicle on a flat surface and engaging the handbrake. Use a jack to lift the car and secure it with jack stands. Ensure you are wearing safety goggles and gloves for protection.
2. Remove the Stock Exhaust
Locate the stock exhaust system and begin by removing the bolts connecting it to the exhaust manifold. Carefully detach any hangers and brackets holding the exhaust in place. Once all connections are removed, gently lower the stock exhaust from the vehicle.
3. Install New Gaskets
Before installing the Akrapovic exhaust, replace the old gaskets with new ones. Apply a small amount of anti-seize compound to the bolts to ensure a secure fit and prevent corrosion.
4. Fit the Akrapovic Exhaust
Position the Akrapovic exhaust system into place. Start by connecting it to the exhaust manifold, ensuring the new gaskets are properly aligned. Secure the exhaust with bolts, but do not fully tighten them yet to allow for adjustments.
5. Secure the Exhaust System
Once the exhaust is in position, attach any hangers and brackets to secure it. Ensure that the exhaust is aligned correctly and does not interfere with any other components of the vehicle.
6. Tighten All Bolts
Using a torque wrench, tighten all bolts to the manufacturer’s specifications. This step is crucial to ensure a leak-free installation and to maintain the integrity of the exhaust system.
7. Lower the Vehicle
Once everything is securely in place, carefully lower the vehicle from the jack stands. Double-check all connections and ensure that the exhaust is properly aligned.
Post-Installation Checks
After installation, it’s essential to conduct some post-installation checks:
- Start the engine and listen for any unusual noises that may indicate a leak.
- Check for any visible exhaust leaks around the connections.
- Ensure that the exhaust is not hanging too low and is clear of any moving parts.
Conclusion
Installing the Akrapovic exhaust on the S55 engine is a rewarding modification that enhances both performance and sound. By following this guide, you can successfully complete the installation and enjoy the benefits of increased horsepower and a more aggressive exhaust note. Always remember to consult your vehicle’s manual and follow safety precautions during the installation process.