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The Subaru BRZ and Toyota 86 have gained a loyal following among car enthusiasts for their lightweight design and balanced handling. However, many owners seek more power to enhance their driving experience. One popular modification is the installation of a Stillen supercharger, which can boost the FA20 engine’s output significantly. This article explores the power gains from installing a Stillen supercharger on a BRZ FA20.
Understanding the FA20 Engine
The FA20 engine is a 2.0-liter flat-four engine that powers the Subaru BRZ and Toyota 86. It features a naturally aspirated design, which, while providing a responsive driving experience, limits the overall power output. The stock engine typically produces around 200 horsepower and 151 lb-ft of torque, which is adequate for many drivers but can leave enthusiasts wanting more.
What is a Stillen Supercharger?
A Stillen supercharger is a forced induction system designed to increase the air intake of an engine, allowing for more fuel to be burned and thus increasing horsepower and torque. The Stillen supercharger kit for the FA20 engine is known for its reliability and performance, making it a popular choice among BRZ and 86 owners looking to enhance their vehicles.
Power Gains with the Stillen Supercharger
Installing a Stillen supercharger on the BRZ can yield impressive power gains. Many users report increases of over 100 horsepower, pushing the total output to 300+ horsepower. This significant boost transforms the driving experience, providing more acceleration, improved throttle response, and a thrilling ride.
Stock vs. Supercharged Performance
- Stock FA20 Engine: 200 hp, 151 lb-ft torque
- Supercharged FA20 Engine: 300+ hp, 200+ lb-ft torque
Installation Process
Installing a Stillen supercharger requires careful attention to detail and some mechanical knowledge. Below is a general overview of the installation process.
Tools and Equipment Needed
- Socket set
- Wrenches
- Torque wrench
- Lift or jack stands
- Supercharger kit
- New gaskets and seals
Step-by-Step Installation Guide
- Disconnect the battery.
- Remove the intake manifold.
- Install the supercharger mounting brackets.
- Attach the supercharger to the engine.
- Connect the intake and intercooler piping.
- Reinstall the intake manifold.
- Reconnect the battery and check for leaks.
It is recommended to follow the manufacturer’s instructions closely and consult a professional if needed. Proper installation is crucial for optimal performance and reliability.
Tuning Your BRZ After Installation
After installing the Stillen supercharger, tuning the engine is essential to maximize the power gains and ensure smooth operation. A professional tune can help adjust the air-fuel mixture and ignition timing to accommodate the increased airflow from the supercharger.
Benefits of Tuning
- Improved throttle response
- Increased horsepower and torque
- Enhanced fuel efficiency
- Better overall engine performance
Potential Considerations
While the Stillen supercharger offers significant power gains, there are some considerations to keep in mind:
- Increased wear on engine components
- Possible need for upgraded fuel injectors
- Potential changes to insurance and warranty coverage
- Higher maintenance costs
Conclusion
Installing a Stillen supercharger on the Subaru BRZ FA20 can provide impressive power gains, transforming the driving experience. With careful installation and proper tuning, owners can enjoy a reliable and exhilarating ride with over 300 horsepower. As with any modification, it’s essential to weigh the benefits against potential considerations to ensure a satisfying upgrade.