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The .7 HEMI engine is renowned for its power and performance, but enthusiasts often seek ways to push the limits even further. One popular modification is the installation of aftermarket headers, specifically Kooks headers, combined with an MDS (Multi-Displacement System) delete. This combination can significantly enhance horsepower, allowing drivers to achieve over 550 horsepower.
Understanding the .7 HEMI Engine
The .7 HEMI engine, part of Chrysler’s HEMI family, features a hemispherical combustion chamber design that allows for improved airflow and combustion efficiency. This engine is commonly found in a variety of Dodge and Chrysler vehicles, making it a favorite among performance enthusiasts.
What are Headers?
Headers are aftermarket exhaust components that replace the factory exhaust manifolds. They are designed to improve exhaust flow, which can lead to increased horsepower and torque. Kooks headers are particularly popular due to their high-quality materials and performance-oriented design.
Benefits of Upgrading to Kooks Headers
- Improved exhaust flow for better performance
- Enhanced sound quality
- Durable construction for longevity
- Better heat dissipation
The MDS Delete Explained
The MDS (Multi-Displacement System) is designed to improve fuel efficiency by deactivating half of the engine’s cylinders during light-load conditions. However, for performance enthusiasts, this system can hinder full power potential. An MDS delete removes this system, allowing all cylinders to operate at all times, which can lead to significant power gains.
Advantages of MDS Delete
- Increased horsepower and torque
- Smoother power delivery
- Reduced engine strain
- Improved throttle response
Installation Process
Installing Kooks headers and performing an MDS delete requires some mechanical skill and the right tools. Here’s a general overview of the installation process:
- Gather necessary tools: socket set, wrenches, torque wrench, and gaskets.
- Disconnect the battery and remove the factory exhaust manifolds.
- Install the Kooks headers, ensuring a proper seal with new gaskets.
- Remove the MDS components and install the MDS delete kit.
- Reconnect all components and the battery.
- Start the engine and check for leaks.
Tuning for Maximum Performance
After installing Kooks headers and completing the MDS delete, tuning the engine is crucial to maximize performance. A professional tune can optimize fuel delivery and ignition timing, ensuring that the engine runs efficiently and safely at higher power levels.
Benefits of Professional Tuning
- Optimized power output
- Improved fuel efficiency
- Enhanced drivability
- Prevention of potential engine damage
Expected Performance Gains
With Kooks headers and an MDS delete, many enthusiasts report achieving over 550 horsepower. This power increase can transform the driving experience, making the vehicle more responsive and exhilarating to drive.
Factors Influencing Performance
- Quality of the headers and components used
- Proper installation and tuning
- Supporting modifications (e.g., intake upgrades)
- Overall condition of the engine
Conclusion
Upgrading to Kooks headers and performing an MDS delete on a .7 HEMI engine can yield impressive power gains, exceeding 550 horsepower. While the installation process requires some expertise, the performance benefits make it a worthwhile investment for any serious enthusiast. With the right tuning, drivers can enjoy a significant enhancement in both power and driving experience.