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The Subaru Legacy GT is known for its performance and reliability, but enthusiasts often seek ways to enhance its capabilities further. One popular modification is the installation of a Perrin intercooler. This upgrade can provide significant benefits, including reduced intake temperatures and increased horsepower. In this article, we will explore the process of installing a Perrin intercooler on a Subaru Legacy GT, the expected power gains, and the overall cost of this modification.
Understanding the Benefits of an Intercooler
An intercooler plays a crucial role in turbocharged vehicles. Its primary function is to cool the air that has been compressed by the turbocharger before it enters the engine. Cooler air is denser, which allows for more oxygen to enter the combustion chamber, leading to improved combustion efficiency and power output.
- Reduces intake air temperature
- Increases horsepower and torque
- Improves engine efficiency
- Enhances overall performance
Tools and Materials Needed
Before starting the installation, gather the necessary tools and materials. Here’s a list of what you will need:
- Perrin intercooler kit
- Socket set
- Wrench set
- Flathead screwdriver
- Phillips screwdriver
- Torque wrench
- Hose clamps
- Coolant (if necessary)
- Shop towels
Step-by-Step Installation Guide
1. Preparation
Begin by parking your Subaru Legacy GT on a level surface and ensuring the engine is cool. Disconnect the negative battery terminal to prevent any electrical issues during the installation.
2. Remove the Factory Intercooler
Start by removing the factory intercooler. This involves loosening the clamps on the intake and outlet hoses. Use a flathead screwdriver to carefully pry off the hoses. Once the hoses are removed, unbolt the intercooler from its mounting points using the socket set.
3. Install the Perrin Intercooler
With the factory intercooler removed, position the Perrin intercooler in place. Secure it using the provided mounting hardware. Make sure to tighten the bolts to the manufacturer’s specifications using a torque wrench.
4. Connect the Hoses
Attach the intake and outlet hoses to the new intercooler. Ensure that they fit snugly and are secured with hose clamps. Double-check that all connections are tight to prevent any boost leaks.
5. Reconnect the Battery
Once everything is connected, reconnect the negative battery terminal. This will restore power to the vehicle.
6. Test the Installation
Start the engine and allow it to idle for a few minutes. Check for any leaks around the hoses and fittings. If everything looks good, take the car for a test drive to ensure the intercooler is functioning properly.
Expected Power Gains
After installing the Perrin intercooler, you can expect a power gain of approximately 10 horsepower. This increase may vary depending on other modifications and the overall condition of the engine. However, the most significant benefit is the reduction in intake temperatures, which can lead to more consistent performance, especially during spirited driving or in hot weather conditions.
Cost of the Installation
The cost of purchasing a Perrin intercooler typically ranges around $900. This price includes the intercooler itself and any necessary installation hardware. If you choose to have the intercooler installed by a professional, labor costs may add an additional $200 to $400, depending on the shop’s rates.
Conclusion
Installing a Perrin intercooler on your Subaru Legacy GT is a worthwhile investment for those looking to enhance performance. With an expected power gain of 10 horsepower and improved engine efficiency, this modification can significantly elevate your driving experience. Whether you choose to tackle the installation yourself or seek professional help, the benefits of a cooler intake charge are undeniable.