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The A90 Toyota Supra, powered by the B58 engine, has quickly become a favorite among car enthusiasts and tuners alike. With its impressive performance out of the box, many owners are looking to push the limits of this sports car even further. In this article, we will explore how to achieve 700+ horsepower using full bolt-on modifications and an upgraded fuel system.
Understanding the B58 Engine
The B58 engine is a 3.0-liter inline-six turbocharged engine that offers a great balance of power and efficiency. This engine is known for its robust design and tuning potential, making it an ideal candidate for performance upgrades.
- Engine Type: 3.0L Inline-Six Turbocharged
- Stock Horsepower: Approximately 335 HP
- Torque: Around 365 lb-ft
Full Bolt-On Modifications (FBO)
Full bolt-on modifications (FBO) refer to a series of upgrades that can be easily installed without extensive modifications to the engine or chassis. These upgrades typically include an upgraded intake, turbocharger, exhaust system, and intercooler.
1. Upgraded Intake System
One of the first steps in increasing horsepower is to improve the airflow into the engine. An upgraded intake system allows for better air intake, resulting in improved performance.
- High-Performance Air Filter
- Cold Air Intake
2. Turbocharger Upgrade
Upgrading the turbocharger is crucial for achieving higher horsepower numbers. A larger turbo can provide more boost, which translates to increased power output.
- Upgraded Turbocharger (e.g., Pure Turbos)
- Enhanced Wastegate Actuator
3. Exhaust System
A high-flow exhaust system reduces back pressure, allowing the engine to expel exhaust gases more efficiently. This upgrade can significantly improve performance and sound.
- Cat-Back Exhaust System
- Downpipe Upgrade
4. Intercooler Upgrade
An upgraded intercooler helps to reduce the temperature of the intake air, leading to denser air and more power. This is especially important when running higher boost levels.
- Front-Mount Intercooler
- Better Piping for Reduced Pressure Drop
Upgraded Fuel System
To support the increased horsepower from the FBO modifications, it is essential to upgrade the fuel system. A higher flow fuel system ensures that the engine receives enough fuel to match the increased air flow.
1. Fuel Pump Upgrade
Upgrading to a high-performance fuel pump is critical for maintaining fuel pressure under high load conditions. This ensures that the engine receives adequate fuel delivery.
- High-Flow Fuel Pump (e.g., Walbro 450)
- Upgraded Fuel Pump Controller
2. Fuel Injectors
Installing larger fuel injectors allows for increased fuel delivery to match the air demands of the engine. This is crucial for achieving higher horsepower levels safely.
- Upgraded Fuel Injectors (e.g., 850cc or larger)
- Injector Dynamics or DeatschWerks Options
3. Fuel Lines and Rails
Upgrading fuel lines and rails ensures that fuel can flow freely and efficiently to the injectors, reducing the risk of fuel starvation during high-performance driving.
- Upgraded Fuel Rails
- AN Lines for Better Flow
Tuning for Performance
After completing the FBO modifications and upgrading the fuel system, tuning is essential to maximize performance. A professional tune will ensure that the engine runs efficiently and safely at higher power levels.
- ECU Remapping
- Dyno Tuning for Optimal Performance
Conclusion
Achieving 700+ horsepower in the A90 Supra with B58 mods is an exciting endeavor. By focusing on full bolt-on modifications and an upgraded fuel system, enthusiasts can unlock the full potential of this remarkable engine. With the right upgrades and tuning, the A90 Supra can transform into a high-performance machine that offers thrilling driving experiences.