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The 4G63 engine has earned a reputation as a robust platform for performance enthusiasts, especially when modified to exceed 400 horsepower. To achieve these power gains, several supporting modifications are essential to ensure reliability and efficiency. In this article, we will explore the top supporting mods that can help maximize the potential of the 4G63 engine.
Understanding the 4G63 Engine
The 4G63 is a turbocharged inline-four engine produced by Mitsubishi. It is known for its durability and tunability, making it a favorite among tuners and racers. However, pushing this engine beyond 400 hp requires careful consideration of various supporting modifications.
Essential Supporting Mods
- Upgraded Turbocharger: A larger turbocharger can significantly increase airflow and boost pressure, essential for reaching higher horsepower levels.
- High-Performance Fuel Injectors: Upgrading to larger fuel injectors ensures that the engine receives the necessary fuel to match the increased air intake.
- Aftermarket Fuel Pump: A high-flow fuel pump is crucial for supplying enough fuel to the injectors, especially under high boost conditions.
- Intercooler Upgrade: A larger intercooler helps reduce intake air temperatures, improving engine efficiency and performance.
- ECU Tuning: Proper tuning of the engine management system is necessary to optimize performance and ensure reliability.
- Exhaust System Upgrade: A high-flow exhaust system reduces back pressure, allowing the engine to expel exhaust gases more efficiently.
- Performance Camshafts: Upgraded camshafts can improve airflow and engine response, contributing to higher power output.
- Stronger Engine Internals: If aiming for extreme power, consider upgrading pistons, rods, and bearings to handle increased stress.
Detailed Breakdown of Each Modification
Upgraded Turbocharger
Choosing the right turbocharger is critical. Popular options include the Garrett GT series and the BorgWarner EFR series. These turbochargers provide better spool times and higher boost levels, allowing the 4G63 to achieve impressive power figures.
High-Performance Fuel Injectors
Fuel injectors must be capable of delivering the necessary fuel volume. Brands like Injector Dynamics and DeatschWerks offer high-flow injectors that can support power levels exceeding 400 hp.
Aftermarket Fuel Pump
A high-performance fuel pump, such as the Walbro 450, can ensure a consistent fuel supply under high demand, preventing lean conditions that could damage the engine.
Intercooler Upgrade
Upgrading to a larger front-mount intercooler can significantly lower intake air temperatures, which is essential for maintaining power and preventing knock. Brands like ETS and Mishimoto offer reliable options.
ECU Tuning
Proper tuning is vital for maximizing power gains and ensuring engine safety. Tools like the AEM Infinity or ECMLink provide advanced tuning capabilities for the 4G63.
Exhaust System Upgrade
A performance exhaust system, such as those from HKS or Greddy, can help reduce back pressure and improve exhaust flow, resulting in better performance and sound.
Performance Camshafts
Upgraded camshafts can enhance airflow and increase horsepower. Brands like Crower and Brian Crower offer camshaft options specifically designed for the 4G63 engine.
Stronger Engine Internals
If pushing the limits of the 4G63, consider upgrading to forged pistons and connecting rods. This will provide the strength needed to handle higher power levels and boost pressures.
Conclusion
Maximizing the power gains of the 4G63 engine beyond 400 hp requires a combination of strategic modifications. From upgrading the turbocharger to enhancing the fuel system and tuning, each component plays a vital role in achieving reliable performance. By carefully selecting and implementing these supporting mods, enthusiasts can unlock the full potential of the 4G63 engine.