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The Subaru WRX is known for its impressive performance and tuning potential, and one of the key upgrades enthusiasts consider is the top mount intercooler (TMIC). In this article, we will explore the power gains associated with the WRX top mount intercooler, particularly in conjunction with COBB’s Stage 2 tuning and beyond.
Understanding the Role of an Intercooler
An intercooler plays a crucial role in the performance of a turbocharged engine. Its primary function is to cool the air that has been compressed by the turbocharger before it enters the engine’s intake. Cooler air is denser, allowing for more oxygen to enter the combustion chamber, which can lead to improved power and efficiency.
Benefits of Upgrading to a Top Mount Intercooler
Upgrading to a top mount intercooler can offer several benefits for WRX owners:
- Improved Cooling Efficiency: A larger and more efficient TMIC can lower intake temperatures significantly.
- Enhanced Power Output: Cooler air allows for more aggressive tuning and increased horsepower.
- Better Throttle Response: Reduced intake temperatures can lead to improved throttle response and overall driving experience.
- Reduced Knock Potential: Cooler intake temperatures help in reducing the likelihood of knock, which can damage the engine.
COBB Stage 2 Tuning Overview
COBB Tuning is a well-known name in the Subaru community, providing performance tuning solutions that optimize the WRX’s capabilities. Stage 2 tuning typically involves a combination of a high-flow downpipe, an upgraded TMIC, and a corresponding ECU map.
Stage 2 Power Gains
When paired with COBB’s Stage 2 tune, the WRX can see significant power gains. Here’s what you can typically expect:
- Horsepower Increase: Expect a gain of approximately 30-50 horsepower over stock.
- Torque Improvement: Torque can increase by 40-70 lb-ft, enhancing acceleration and responsiveness.
- Improved Boost Control: The ECU map optimizes boost levels, leading to a more linear power delivery.
Real Results: Dyno Testing
To better understand the impact of a top mount intercooler in conjunction with COBB Stage 2 tuning, let’s look at some real-world dyno results:
- Stock vs. Stage 2 with TMIC: A stock WRX typically produces around 250 horsepower at the crank. After installing a TMIC and a COBB Stage 2 tune, dyno results often show figures in the range of 280-300 horsepower.
- Temperature Drop: In testing, intake temperatures can drop by as much as 20-30 degrees Fahrenheit, leading to more consistent power delivery.
- Boost Levels: With the upgraded TMIC, boost levels can be maintained more effectively, resulting in peak boost being reached quicker.
Considerations When Upgrading
While upgrading to a top mount intercooler and tuning with COBB Stage 2 offers substantial benefits, there are several considerations to keep in mind:
- Installation Complexity: Ensure you have the necessary tools and knowledge for proper installation, or consider professional help.
- Supporting Mods: For maximum gains, consider additional supporting modifications such as a high-flow exhaust system.
- ECU Tuning: Always pair hardware upgrades with appropriate ECU tuning to avoid potential engine damage.
Conclusion
Upgrading to a top mount intercooler is a highly effective way to enhance the performance of your Subaru WRX, especially when combined with COBB’s Stage 2 tuning. The real-world results demonstrate significant power gains, improved cooling efficiency, and overall better driving dynamics. If you’re looking to maximize your WRX’s potential, investing in a quality TMIC and proper tuning is a step in the right direction.