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The Mitsubishi Eclipse with the 4G63 engine is a popular choice among car enthusiasts. Known for its potential, the 4G63 can be modified to achieve impressive horsepower figures without breaking the bank. In this article, we will explore budget-friendly modifications to reach 350 horsepower using a T3/T4 hybrid turbo and a Costco intercooler.
Understanding the 4G63 Engine
The 4G63 is a 2.0-liter inline-four engine that has gained a reputation for its robustness and tunability. It was used in various Mitsubishi models, including the Eclipse and Talon. Its iron block and aluminum DOHC head provide a solid foundation for modifications.
Why Modify the 4G63?
There are several reasons to modify the 4G63, including:
- Increased horsepower and torque
- Improved throttle response
- Enhanced driving experience
- Potential for better fuel efficiency with proper tuning
Key Modifications for Achieving 350 HP
T3/T4 Hybrid Turbocharger
The T3/T4 hybrid turbo is a popular choice for those looking to boost their 4G63’s performance. It offers a great balance between spool time and top-end power. Here are some key points to consider:
- Choose a turbo with a compressor size suitable for 350 HP.
- Ensure proper oil and coolant lines are installed.
- Consider upgrading the turbo manifold for better flow.
Costco Intercooler
A budget-friendly option for intercooling is to use a Costco intercooler. These intercoolers are often inexpensive and can provide adequate cooling for the power levels we are aiming for. Here’s how to install it:
- Measure and cut the piping to fit the intercooler.
- Ensure all connections are tight and leak-free.
- Consider adding a blow-off valve to prevent compressor surge.
Supporting Modifications
Fuel System Upgrades
To support the increased power, upgrading the fuel system is essential. Consider the following:
- Install larger fuel injectors (at least 550cc).
- Upgrade the fuel pump to a higher flow model.
- Consider a fuel pressure regulator for proper fuel delivery.
Engine Management
A proper engine management system is crucial for tuning your 4G63. Options include:
- Aftermarket ECU with tuning capabilities.
- Wideband O2 sensor for accurate air-fuel ratio monitoring.
- Dyno tuning for optimal performance.
Exhaust System Modifications
An efficient exhaust system is vital for maximizing power. Here are some modifications to consider:
- Install a larger diameter downpipe.
- Upgrade to a high-flow catalytic converter.
- Use a performance cat-back exhaust system for better flow.
Cooling System Enhancements
Keeping your engine cool is critical, especially when pushing for higher horsepower. Consider these enhancements:
- Upgrade the radiator for better heat dissipation.
- Consider adding an oil cooler for engine longevity.
- Use high-quality coolant for optimal performance.
Final Thoughts
Achieving 350 horsepower from a 4G63 Eclipse is possible with the right combination of budget-friendly modifications. By focusing on a T3/T4 hybrid turbo, a Costco intercooler, and supporting upgrades, you can enjoy a powerful and reliable vehicle. Remember to tune your engine properly to ensure longevity and performance.