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The 1G Eclipse, a beloved model among car enthusiasts, has long been a canvas for performance upgrades. This article explores a remarkable build that achieves 320 horsepower using only DSM (Diamond Star Motors) parts, showcasing the potential of this iconic vehicle.
Understanding the 1G Eclipse
The 1G Eclipse, produced from 1990 to 1994, is part of a joint venture between Mitsubishi and Chrysler. Known for its lightweight construction and turbocharged engines, it has garnered a dedicated following. The 1G models, particularly the Eclipse GSX and GST, are prized for their tunability and performance potential.
Key Components for Achieving 320 HP
Achieving 320 horsepower in a 1G Eclipse requires a combination of the right parts, tuning, and careful attention to detail. Below are the key components that contribute to this impressive output:
- Turbocharger: Upgraded turbocharger capable of higher boost levels.
- Fuel System: High-flow fuel injectors and a performance fuel pump.
- Engine Management: Aftermarket ECU for precise tuning.
- Exhaust System: High-performance exhaust manifold and downpipe.
- Intake System: Upgraded intake manifold and air filter.
Turbocharger Selection
The choice of turbocharger is critical in reaching the desired horsepower. For this build, a larger turbo that can sustain higher boost levels was selected. This allows for better airflow and increased power output.
Recommended Turbochargers
- Garrett GT28RS
- Holset HX35
- FP Black
Fuel System Upgrades
To support the increased power levels, an upgraded fuel system is essential. This includes high-flow fuel injectors and a performance fuel pump to ensure that the engine receives the necessary fuel at all times.
Injector and Pump Recommendations
- Fuel Injectors: 950cc or larger
- Fuel Pump: Walbro 255lph
Engine Management Tuning
Proper tuning is crucial for maximizing performance. An aftermarket ECU allows for custom tuning, which can optimize fuel maps and ignition timing to achieve the best performance while maintaining reliability.
Popular Engine Management Systems
- ECU Flash with DSMLink
- AEM EMS
- Hondata
Exhaust System Enhancements
A high-performance exhaust system is vital for improving airflow and reducing back pressure. Upgrading the exhaust manifold and downpipe can lead to significant gains in horsepower.
Exhaust System Recommendations
- Aftermarket Exhaust Manifold
- 3-inch Downpipe
- Cat-back Exhaust System
Intake System Modifications
To complement the turbocharger and exhaust upgrades, an improved intake system is necessary. This includes a larger intake manifold and a high-flow air filter, which help to maximize airflow into the engine.
Intake System Suggestions
- Upgraded Intake Manifold
- High-Flow Air Filter
Real-World Performance Testing
After completing the upgrades, the 1G Eclipse was subjected to rigorous performance testing. The results were impressive, with the vehicle achieving 320 horsepower at the wheels, demonstrating the effectiveness of the DSM-only parts used in the build.
Conclusion
The journey to achieving 320 horsepower in a 1G Eclipse using only DSM parts is a testament to the vehicle’s potential. With the right combination of components and tuning, enthusiasts can unlock impressive performance while staying true to the car’s roots.