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The Toyota MR2 Turbo is a beloved sports car known for its mid-engine layout and exceptional handling. For enthusiasts looking to enhance performance, upgrading the turbocharger can make a significant difference. In this article, we will explore the installation of the Garrett T3/T4 turbo and the resulting performance upgrades.
Understanding the Garrett T3/T4 Turbo
The Garrett T3/T4 turbocharger is a popular choice among MR2 owners due to its versatility and performance capabilities. This hybrid turbo combines the T3 turbine with the T4 compressor, allowing for increased airflow and power output. Key features include:
- Improved spool time
- Higher boost potential
- Enhanced throttle response
- Durability and reliability
Preparation for Installation
Before diving into the installation process, it’s essential to gather all necessary tools and parts. This ensures a smooth upgrade experience. Here’s a checklist of what you will need:
- Garrett T3/T4 turbocharger
- Turbo manifold
- Wastegate
- Intercooler
- High-flow fuel injectors
- Boost controller
- Oil and coolant lines
- Basic hand tools
Step-by-Step Installation Process
Installing the Garrett T3/T4 turbo involves several steps. Follow this guide to ensure proper installation:
Step 1: Remove the Old Turbo
Begin by disconnecting the battery and removing the necessary components to access the stock turbo. This includes:
- Intake piping
- Exhaust manifold
- Oil and coolant lines
Carefully detach the old turbocharger and set it aside.
Step 2: Install the New Turbo
Position the Garrett T3/T4 turbocharger onto the turbo manifold. Ensure that all mounting points align correctly. Secure the turbo using the appropriate bolts and gaskets to prevent leaks.
Step 3: Connect Oil and Coolant Lines
Attach the oil feed and return lines to the turbo. Make sure to use new gaskets to ensure a tight seal. Next, connect the coolant lines, ensuring there are no leaks.
Step 4: Install the Intercooler
Position the intercooler in front of the vehicle, ensuring it has sufficient airflow. Connect the piping from the turbo to the intercooler and then to the throttle body.
Step 5: Upgrade Fuel System
With increased boost comes the need for more fuel. Install high-flow fuel injectors and ensure the fuel pump can handle the additional demand. Adjust fuel pressure if necessary.
Step 6: Install Boost Controller
To manage boost levels effectively, install a boost controller. This will allow you to adjust the boost pressure to your desired level for optimal performance.
Results and Performance Gains
After completing the installation of the Garrett T3/T4 turbo, it’s time to evaluate the performance gains. Many MR2 Turbo owners have reported significant improvements, including:
- Increased horsepower and torque
- Better acceleration and throttle response
- Enhanced overall driving experience
On average, users have experienced horsepower gains ranging from 50 to 100+ hp, depending on supporting modifications and tuning. Proper tuning is crucial to ensure the engine runs efficiently and reliably.
Conclusion
The Garrett T3/T4 turbo upgrade for the Toyota MR2 Turbo is a fantastic way to enhance performance and driving enjoyment. With careful installation and tuning, this upgrade can transform your MR2 into a powerful and thrilling sports car. Always remember to monitor your vehicle’s performance and make adjustments as necessary to maintain reliability and efficiency.