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The A90 Toyota Supra, powered by the B58 engine, has gained significant popularity among car enthusiasts and tuners. With its impressive performance capabilities, many owners are looking to push their vehicles beyond the 650 horsepower mark. In this article, we will explore essential modifications, focusing on upgrading to larger fuel injectors and high-flow downpipes.
Understanding the B58 Engine
The B58 engine is a 3.0-liter inline-six turbocharged powerhouse that delivers a robust performance right out of the factory. With a strong foundation, it offers ample tuning potential for those looking to increase horsepower and torque.
Why Upgrade Fuel Injectors?
Upgrading to larger fuel injectors is crucial when aiming for higher horsepower. The factory injectors may become insufficient as power levels increase, leading to fuel starvation and potential engine damage.
Benefits of Larger Fuel Injectors
Investing in larger injectors provides several advantages:
- Improved fuel delivery for higher horsepower
- Better throttle response
- Enhanced engine efficiency
Selecting the Right Injectors
Choosing the right fuel injectors involves understanding the flow rate required for your power goals. For 650+ horsepower, consider injectors with a flow rate of at least 1000cc/min.
Installation Process
Installing larger fuel injectors requires some mechanical knowledge. Here’s a brief overview of the steps involved:
- Remove the engine cover and intake components.
- Disconnect the fuel lines and electrical connectors from the stock injectors.
- Remove the old injectors and install the new ones.
- Reassemble all components and check for leaks.
High-Flow Downpipes: An Essential Upgrade
Alongside larger injectors, high-flow downpipes are essential for maximizing exhaust flow, which is critical for achieving higher horsepower. The factory downpipe can restrict exhaust gases, leading to a drop in performance.
Advantages of High-Flow Downpipes
Upgrading to high-flow downpipes offers several benefits:
- Increased horsepower and torque
- Better turbo response
- Enhanced exhaust sound
Choosing the Right Downpipe
When selecting a downpipe, consider the material and design. Stainless steel is a popular choice for durability and performance. Additionally, look for a downpipe that offers a high-flow design with minimal bends.
Installation of High-Flow Downpipes
The installation process for high-flow downpipes is similar to that of fuel injectors. Here’s a brief guide:
- Lift the vehicle and secure it on jack stands.
- Remove the factory downpipe from the turbocharger and exhaust system.
- Install the new high-flow downpipe, ensuring proper fitment.
- Reconnect all exhaust components and check for leaks.
Tuning Your A90 Supra
After installing larger fuel injectors and high-flow downpipes, tuning is essential to maximize performance. A professional tune will ensure the engine runs efficiently with the new modifications.
- Custom tuning is recommended for optimal performance.
- Monitor air-fuel ratios and boost levels.
Conclusion
Upgrading your A90 Supra B58 with larger fuel injectors and high-flow downpipes is a significant step towards achieving 650+ horsepower. These modifications not only enhance performance but also ensure your engine runs smoothly under increased power levels. Always remember to follow up with proper tuning to get the most out of your upgrades.