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The 4G63 engine has long been a favorite among performance enthusiasts, especially in the Mitsubishi Eclipse and Lancer Evolution models. With the right modifications, achieving over 700 horsepower is not only possible but also practical. This article will explore the methods involved, focusing on water methanol injection and custom tuning.
Understanding the 4G63 Engine
The 4G63 is a turbocharged inline-four engine that has earned its reputation for reliability and performance. Originally designed for the Mitsubishi Galant, it has been adapted for various models over the years. Here are some key features:
- 2.0-liter displacement
- DOHC design
- Turbocharged from the factory
- Strong aftermarket support
Water Methanol Injection: The Key to High Horsepower
Water methanol injection (WMI) is a technique that involves injecting a mixture of water and methanol into the engine’s intake system. This method offers several benefits, particularly for high-performance applications:
- Increased octane rating
- Reduced intake temperatures
- Improved combustion efficiency
- Prevention of detonation
How WMI Works
WMI systems work by atomizing the water-methanol mixture, which then enters the combustion chamber. The evaporation of water cools the intake air, allowing for denser air-fuel mixtures. This results in a more powerful combustion process, essential for achieving high horsepower levels.
Custom Tuning: Unlocking the 4G63’s Potential
Custom tuning is crucial when aiming for high horsepower figures. Proper tuning ensures that the engine runs efficiently and safely under increased power levels. Here are some essential aspects to consider:
- ECU remapping
- Fuel map adjustments
- Ignition timing optimization
- Monitoring air-fuel ratios
Choosing the Right Tuner
Selecting an experienced tuner is vital. Look for someone with a solid reputation in the 4G63 community. They should have experience with both WMI and the specific modifications you plan to implement.
Essential Modifications for 700+ HP
To reach the 700+ horsepower mark, several modifications are necessary. These upgrades will ensure that your engine can handle the increased power and stress:
- Upgraded turbocharger
- High-performance intercooler
- Forged internals (pistons, rods)
- High-flow fuel injectors
- Aftermarket fuel pump
Upgraded Turbocharger
Choosing a larger turbocharger can significantly increase airflow, which is essential for achieving high horsepower. Many enthusiasts opt for a GT30 or similar turbo for optimal performance.
High-Performance Intercooler
An efficient intercooler is crucial for reducing intake temperatures. Look for a front-mount intercooler designed for high horsepower applications to maximize performance.
Forged Internals
Upgrading to forged pistons and connecting rods helps withstand the increased pressures and temperatures associated with high horsepower. This modification is essential for engine longevity.
High-Flow Fuel Injectors and Pump
To support the increased fuel demands, high-flow fuel injectors and an aftermarket fuel pump are necessary. This ensures that the engine receives adequate fuel under high boost conditions.
Conclusion
Maxing out a 4G63 engine to achieve over 700 horsepower is an ambitious yet attainable goal. By incorporating water methanol injection and custom tuning along with essential modifications, enthusiasts can unlock the full potential of this legendary engine. Always remember to prioritize safety and reliability in your performance builds.