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The MR2 SW20 is a beloved sports car known for its lightweight design and mid-engine layout. Enthusiasts often seek ways to enhance its performance, and one of the most effective modifications is upgrading the turbocharger. In this article, we will explore the performance gains achieved by installing the Garrett GT3076R turbocharger on the MR2 SW20, highlighting the results from before and after dyno tests.
Understanding the Garrett GT3076R Turbocharger
The Garrett GT3076R is a popular choice among performance enthusiasts due to its ability to provide significant power gains while maintaining reliability. This turbocharger features:
- Compressor Wheel Diameter: 76mm
- Turbo Type: Ball Bearing
- Maximum Boost Pressure: Up to 30 psi
- Power Range: Capable of supporting over 400 horsepower
Before the Upgrade: Stock Performance Metrics
Before the turbo upgrade, the MR2 SW20 was equipped with its stock turbocharger, which provided decent performance but left much to be desired for serious enthusiasts. The stock performance metrics included:
- Horsepower: Approximately 200 hp at the crank
- Torque: Around 200 lb-ft
- Boost Pressure: Limited to 10 psi
Dyno Testing: Stock vs. Garrett GT3076R
To evaluate the performance gains from the turbo upgrade, dyno tests were conducted before and after the installation of the Garrett GT3076R. The results were impressive and showcased the significant difference the new turbocharger made.
Before Dyno Results
The initial dyno run with the stock turbocharger yielded the following results:
- Peak Horsepower: 200 hp at 6,500 RPM
- Peak Torque: 200 lb-ft at 4,000 RPM
After Dyno Results
After installing the Garrett GT3076R, a subsequent dyno run produced remarkable improvements:
- Peak Horsepower: 350 hp at 6,500 RPM
- Peak Torque: 320 lb-ft at 4,500 RPM
Performance Gains Overview
The performance gains from the turbo upgrade are substantial. The increase in horsepower and torque translates to a much more exhilarating driving experience. The key takeaways from the upgrade include:
- Horsepower Increase: 150 hp gain
- Torque Increase: 120 lb-ft gain
- Improved Throttle Response: Noticeably quicker acceleration
Additional Modifications for Optimal Performance
To fully realize the benefits of the Garrett GT3076R turbocharger, additional modifications are recommended. These include:
- Upgraded Fuel System: Ensure adequate fuel delivery with larger injectors and a high-flow fuel pump.
- ECU Tuning: Custom tuning is essential to optimize the air-fuel ratio and boost levels.
- Exhaust System Upgrade: A high-performance exhaust system will improve airflow and reduce back pressure.
Conclusion
The upgrade to the Garrett GT3076R turbocharger on the MR2 SW20 has proven to be a game-changer, delivering impressive performance gains that are felt during every drive. With the right supporting modifications, enthusiasts can unlock the full potential of their MR2 and enjoy a thrilling driving experience.