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The Mitsubishi Eclipse has long been a favorite among car enthusiasts, especially those looking to modify their vehicles for performance. In this article, we will explore a Stage 3 build for the Mitsubishi Eclipse, focusing on how to take it from stock to over 250 horsepower. We will cover the installation process, pricing, and essential modifications needed to achieve this power level.
Understanding the Stage 3 Build
A Stage 3 build typically involves extensive modifications that enhance the engine’s performance significantly. This includes upgrading critical components such as the turbocharger, fuel system, and exhaust. The goal is to achieve a reliable power output of 250+ horsepower while maintaining drivability.
Key Modifications for a Stage 3 Build
- Turbocharger Upgrade: A larger turbocharger is essential for increasing airflow and boosting power.
- Fuel System Upgrade: High-flow fuel injectors and a larger fuel pump are necessary to meet the increased fuel demands.
- Exhaust System: A high-performance exhaust system reduces back pressure and enhances exhaust flow.
- ECU Tuning: Custom tuning is required to optimize performance and ensure the engine runs efficiently with the new components.
- Intercooler Upgrade: A larger intercooler helps to reduce intake temperatures, improving performance and reliability.
1. Turbocharger Upgrade
Upgrading the turbocharger is one of the most impactful modifications you can make. A turbocharger with a larger compressor wheel can significantly increase horsepower by allowing more air into the engine. Popular options for the Mitsubishi Eclipse include the Garret GT28 and the BorgWarner EFR series.
2. Fuel System Upgrade
To support the increased airflow from the turbocharger, the fuel system must also be upgraded. This typically involves installing larger fuel injectors (typically 750cc or more) and a high-flow fuel pump. This ensures that the engine receives enough fuel to match the increased air supply.
3. Exhaust System
A performance exhaust system is crucial for reducing back pressure and improving exhaust flow. Look for a full cat-back exhaust system with larger diameter piping and high-flow catalytic converters. This not only enhances performance but also provides a more aggressive exhaust note.
4. ECU Tuning
After installing the new components, it’s essential to tune the engine’s ECU. This can be done using a standalone engine management system or a reflash of the stock ECU. Proper tuning ensures that the engine runs efficiently and safely, maximizing the benefits of the modifications.
5. Intercooler Upgrade
An upgraded intercooler is vital for maintaining optimal intake temperatures. A larger, more efficient intercooler will help cool the air entering the engine, which can lead to improved performance and reduced risk of knock. Consider options like the Mishimoto or ETS intercoolers for your build.
Installation Process
The installation process for a Stage 3 build can be complex and requires a good understanding of automotive mechanics. Here’s a general overview of the steps involved:
- Preparation: Gather all necessary tools and parts before starting the installation.
- Remove Stock Components: Carefully remove the stock turbocharger, exhaust system, and fuel components.
- Install New Parts: Install the new turbocharger, fuel injectors, and exhaust system according to manufacturer instructions.
- Install Intercooler: Position the new intercooler and connect all necessary piping.
- ECU Tuning: Once everything is installed, proceed with the ECU tuning process.
Cost Breakdown
When planning a Stage 3 build, it’s important to budget for both parts and labor. Below is a general cost breakdown for the key components:
- Turbocharger: $1,500 – $2,500
- Fuel System: $500 – $1,000
- Exhaust System: $600 – $1,200
- ECU Tuning: $300 – $800
- Intercooler: $400 – $1,000
- Labor Costs: $500 – $1,500 (if not DIY)
In total, you can expect to spend anywhere from $3,800 to $8,000 for a complete Stage 3 build, depending on the components chosen and whether you opt for professional installation.
Conclusion
A Stage 3 build for the Mitsubishi Eclipse can transform your vehicle into a powerful machine capable of delivering over 250 horsepower. By carefully selecting and installing the right components, you can achieve impressive performance while ensuring reliability. Always remember to budget for both parts and labor, and consider enlisting the help of professionals if you’re not comfortable with the installation process.