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How to Achieve 550+ HP with a HEMI MDS Delete Using a Hellcat Intake and 2.4-inch Pulley
The quest for power in automotive performance often leads enthusiasts to explore various modifications. One of the most popular engines to modify is the HEMI, particularly when aiming for over 550 horsepower. In this article, we will delve into the steps necessary to achieve this power level using a HEMI MDS delete, a Hellcat intake, and a 2.4-inch pulley.
Understanding the HEMI Engine
The HEMI engine, known for its distinctive hemispherical combustion chamber design, has been a cornerstone of performance in the Dodge lineup. Its ability to produce significant horsepower and torque makes it a favorite among car enthusiasts.
HEMI MDS System
The Multi-Displacement System (MDS) is designed to improve fuel efficiency by shutting down half of the engine’s cylinders under light load conditions. While this feature is beneficial for fuel economy, it can limit performance when maximum power is desired. Removing the MDS allows the engine to operate on all cylinders at all times, enhancing performance.
Required Components
- HEMI engine with MDS
- HEMI MDS delete kit
- Hellcat intake manifold
- 2.4-inch supercharger pulley
- Performance tuning software
- High-flow fuel injectors
- Cold air intake system
Step-by-Step Process
1. Remove the MDS System
Start by disconnecting the battery to ensure safety. Remove the intake manifold and any associated components. Install the HEMI MDS delete kit, which typically includes new lifters and a camshaft that disables the MDS function. Reassemble the engine components carefully.
2. Install the Hellcat Intake Manifold
The Hellcat intake manifold is designed for higher airflow and performance. Remove the stock intake manifold and replace it with the Hellcat version. Ensure all gaskets are replaced and properly sealed to prevent vacuum leaks.
3. Upgrade the Supercharger Pulley
Replace the existing supercharger pulley with a 2.4-inch pulley. This smaller pulley increases the supercharger’s RPM, allowing it to deliver more boost pressure. Ensure that the belt tension is correctly adjusted to avoid slippage.
4. Tune the Engine
After all modifications are complete, it is crucial to tune the engine using performance tuning software. This step ensures that the engine runs efficiently with the new components and maximizes horsepower output. A professional tuning service is recommended for optimal results.
Additional Considerations
While achieving 550+ horsepower is an exciting goal, it is essential to consider the following:
- Ensure that the engine’s cooling system is adequate to handle increased power.
- Consider upgrading the exhaust system to improve airflow and sound.
- Regular maintenance checks are crucial to ensure longevity and performance.
- Consult with automotive professionals for advice and installation assistance.
Conclusion
Achieving 550+ horsepower with a HEMI engine through an MDS delete, Hellcat intake, and a 2.4-inch pulley is an attainable goal for performance enthusiasts. With the right components and careful installation, you can significantly enhance your vehicle’s power and performance. Always prioritize safety and consult professionals when needed to ensure the best results.