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The Dodge Challenger Hellcat is a powerhouse right out of the factory, boasting an impressive 717 horsepower. However, many enthusiasts are eager to push the limits even further, seeking to safely increase power to over 900 horsepower. This article will explore the necessary modifications, specifically focusing on E85 tuning and supporting mods.
Understanding E85 Fuel
E85 is a blend of 85% ethanol and 15% gasoline. It has a higher octane rating than traditional gasoline, allowing for more aggressive tuning and increased power output. However, it also requires specific modifications to ensure your engine can handle the increased fuel flow and different combustion characteristics.
Essential Mods for Power Increase
- Upgraded Fuel System: To support E85, upgrading the fuel injectors, fuel pump, and fuel lines is crucial.
- Cold Air Intake: A high-performance cold air intake system can improve airflow to the engine.
- Aftermarket Exhaust System: A less restrictive exhaust allows for better airflow, enhancing performance.
- ECU Tune: A proper ECU tune is necessary to optimize engine performance for E85 fuel.
- Intercooler Upgrade: A larger intercooler can help manage intake temperatures, improving performance and reliability.
Step-by-Step Modifications
1. Fuel System Upgrade
Start with upgrading the fuel injectors to larger sizes that can handle the increased flow required for E85. A high-flow fuel pump is also necessary to maintain adequate pressure. Ensure that all fuel lines are compatible with ethanol to prevent degradation.
2. Installing a Cold Air Intake
Next, install a high-performance cold air intake. This mod improves airflow into the engine, allowing for better combustion and increased power. Look for intakes that are specifically designed for the Hellcat model.
3. Upgrading the Exhaust System
An aftermarket exhaust system reduces back pressure and enhances exhaust flow. This mod not only increases horsepower but also improves the sound of the vehicle, giving it a more aggressive tone.
4. ECU Tuning
After all hardware modifications, a professional ECU tune is essential. This tune will adjust fuel maps, ignition timing, and other parameters to optimize performance with E85. Make sure to choose a tuner experienced with Hellcats.
5. Intercooler Upgrade
Consider upgrading to a larger intercooler to keep intake temperatures lower, especially during spirited driving. This will help maintain performance and prevent knock, ensuring the engine runs smoothly.
Safety Considerations
While increasing horsepower can be exhilarating, safety should always be a priority. Here are some important considerations:
- Monitor Engine Temperatures: Keep an eye on engine temperatures, especially after modifications.
- Regular Maintenance: Maintain regular oil changes and fluid checks to ensure optimal performance.
- Use Quality Parts: Invest in high-quality aftermarket parts to prevent failures.
- Dyno Testing: After tuning, perform a dyno test to ensure your car is running as expected.
Conclusion
Increasing the power of your Dodge Challenger Hellcat from 717 to over 900 horsepower is achievable with the right modifications and E85 tuning. By upgrading the fuel system, installing a cold air intake, enhancing the exhaust system, tuning the ECU, and upgrading the intercooler, you can safely enjoy the extra power. Always prioritize safety and regular maintenance to ensure your modifications enhance your driving experience.