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The A90 Toyota Supra has become a favorite among car enthusiasts and tuners alike. With its B58 engine, the potential for performance upgrades is immense. This guide will walk you through the steps needed to achieve a 700 hp build using a BorgWarner turbo and E85 fuel.
Understanding the B58 Engine
The B58 engine is a 3.0L inline-six turbocharged engine that offers a solid foundation for tuning. It is known for its robust design and ability to handle significant power increases with the right modifications.
Key Features of the B58
- Inline-six configuration for smooth power delivery.
- Strong forged internals capable of handling high horsepower.
- Integrated water-to-air intercooler for efficient cooling.
Choosing the Right Turbocharger
For this build, the BorgWarner turbo is an excellent choice due to its efficiency and power potential. Selecting the right model is crucial for achieving the desired horsepower.
Recommended BorgWarner Turbo Models
- BorgWarner EFR 7670: A great option for quick spool and strong mid-range power.
- BorgWarner EFR 8374: Ideal for higher horsepower goals with excellent efficiency.
Fueling Your Build: The Benefits of E85
E85 fuel, a blend of 85% ethanol and 15% gasoline, offers several advantages for high-performance builds. Its higher octane rating allows for more aggressive tuning and increased horsepower.
Advantages of Using E85
- Higher octane rating reduces the risk of knock.
- Increased cooling properties improve engine efficiency.
- Cost-effective compared to high-octane gasoline.
Step-by-Step Build Process
Now that you have an understanding of the components, let’s dive into the step-by-step process for building your 700 hp A90 Supra.
Step 1: Gather Necessary Parts
Before starting the build, ensure you have all necessary parts on hand. This includes the turbocharger, fuel injectors, fuel pump, intercooler, and tuning software.
Step 2: Install the BorgWarner Turbo
Begin by removing the factory turbo and installing the BorgWarner unit. Ensure all connections are secure and that the turbo is properly mounted.
Step 3: Upgrade Fuel System
Replace the stock fuel injectors with larger ones designed for E85. Upgrade the fuel pump to support the increased flow required for higher horsepower.
Step 4: Install an Upgraded Intercooler
An upgraded intercooler is essential for maintaining optimal intake temperatures. Install a front-mount intercooler to enhance airflow and cooling efficiency.
Step 5: Tune the Engine
After all hardware modifications are complete, it’s time to tune the engine. Use a reputable tuner who has experience with the B58 engine and E85 fuel to maximize performance.
Testing and Validation
Once the build is complete, it’s crucial to test the vehicle to ensure everything is functioning correctly. Monitor engine parameters and performance metrics to validate the build.
Key Performance Metrics to Monitor
- Boost pressure levels.
- Air-fuel ratio.
- Engine temperatures during operation.
Conclusion
Building a 700 hp A90 Supra using a BorgWarner turbo and E85 fuel is a rewarding project for any car enthusiast. With careful planning and execution, you can achieve impressive performance and enjoy the thrill of driving a powerful machine.