Top Supporting Mods for 4g63 Eclipse at 550+ Hp: Fuel System and Exhaust Upgrades

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The 4G63 engine has long been a favorite among car enthusiasts, particularly those who love the Mitsubishi Eclipse. With its potential for high horsepower, reaching 550+ HP is a common goal for many tuners. To achieve this power level, upgrading the fuel system and exhaust components is essential. In this article, we will explore the top supporting mods that can help you reach and maintain that impressive horsepower figure.

Fuel System Upgrades

To support 550+ HP, the fuel system must be capable of delivering the necessary fuel volume and pressure. Here are the key components to consider:

  • Fuel Pump: Upgrading to a high-flow fuel pump is crucial. Look for pumps that can support at least 255 liters per hour (LPH).
  • Fuel Injectors: Larger fuel injectors (1000cc or more) are needed to ensure adequate fuel delivery at high horsepower levels.
  • Fuel Pressure Regulator: An adjustable fuel pressure regulator allows you to fine-tune fuel pressure to match your engine’s demands.
  • Fuel Lines: Upgrading to larger diameter fuel lines can help reduce restrictions and improve flow.
  • Fuel Rail: A high-performance fuel rail can help distribute fuel evenly to all injectors.

Exhaust System Upgrades

An efficient exhaust system is vital for maximizing horsepower and improving turbo spool. Here are the essential exhaust upgrades:

  • Turbo Downpipe: A high-flow downpipe reduces back pressure and improves turbo efficiency.
  • Cat-Back Exhaust System: Upgrading to a performance cat-back exhaust enhances exhaust flow and sound.
  • High-Performance Catalytic Converter: A high-flow cat can help maintain emissions compliance while improving performance.
  • Exhaust Manifold: A tubular manifold can provide better flow characteristics compared to the stock manifold.
  • Wastegate Upgrade: An external wastegate can help control boost levels more effectively.

Additional Considerations

While focusing on the fuel system and exhaust upgrades, other supporting mods can further enhance performance:

  • Tune: A proper tune is essential to ensure that the engine runs efficiently with the new modifications.
  • Intercooler: Upgrading to a larger intercooler can help lower intake temperatures and improve performance.
  • ECU Upgrade: An aftermarket ECU or flashable stock ECU can provide better control over fueling and ignition timing.
  • Intake System: A high-flow intake system can help improve airflow into the engine.
  • Boost Controller: An electronic boost controller can help manage and adjust boost levels for optimal performance.

Conclusion

Reaching 550+ HP in a 4G63 Eclipse requires careful consideration of fuel system and exhaust upgrades. By investing in the right components and ensuring proper tuning, you can achieve impressive power and performance from your vehicle. Always remember to balance modifications with reliability to enjoy your high-powered Eclipse for years to come.