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Achieving 300+ wheel horsepower (HP) on a Subaru WRX is a common goal for many enthusiasts. One of the key modifications that can help reach this target is the installation of a top mount intercooler (TMIC). This article will guide you through the process of maximizing your WRX’s performance using a TMIC.
Understanding the Basics
Before diving into the specifics of intercoolers and tuning, it’s essential to understand how forced induction works in your WRX. The turbocharger compresses air, increasing its density, which allows for more power. However, compressing air also raises its temperature, which can lead to knock and reduced performance. This is where an intercooler comes into play.
Benefits of a Top Mount Intercooler
A top mount intercooler offers several advantages over other types of intercoolers, such as front mount options. Here are some key benefits:
- Compact Design: Fits well within the WRX’s engine bay without extensive modifications.
- Shorter Piping: Reduces turbo lag due to shorter air travel distance.
- Less Weight: Generally lighter than front mount intercoolers.
Selecting the Right TMIC
Choosing the right top mount intercooler is crucial for achieving your horsepower goals. Here are some popular options:
- Process West Verticooler: Known for its efficiency and excellent cooling capabilities.
- GrimmSpeed Top Mount Intercooler: A great balance of performance and price.
- TurboXS TMIC: Offers a significant increase in airflow and cooling.
Installation Process
Installing a top mount intercooler requires some mechanical skills. Here’s a step-by-step guide:
- Gather Tools: You will need basic hand tools, including sockets, wrenches, and screwdrivers.
- Remove the Engine Cover: Start by removing the plastic engine cover to access the intercooler.
- Disconnect Hoses: Carefully disconnect the intake and boost hoses from the stock intercooler.
- Remove Stock Intercooler: Unbolt the stock intercooler and lift it out of the engine bay.
- Install New TMIC: Position the new intercooler in place and secure it with the provided hardware.
- Reconnect Hoses: Reattach the intake and boost hoses, ensuring a tight fit.
- Check for Leaks: Start the engine and check for any boost leaks.
Tuning Your WRX
After installing the TMIC, tuning is essential to maximize performance. Here are some tuning options:
- ECU Reflash: A professional ECU reflash can optimize your fuel maps and boost levels.
- Accessport Tuning: Using an Accessport allows for easy adjustments and monitoring.
- Dyno Tuning: A dyno session can provide precise adjustments for maximum output.
Supporting Modifications
To achieve and maintain 300+ wheel HP, consider additional modifications:
- Upgraded Turbo: A larger turbo can provide the airflow needed for higher power levels.
- Exhaust System: A free-flowing exhaust reduces back pressure and increases performance.
- Intake System: Upgrading your intake can improve airflow to the engine.
Maintaining Your WRX
Once you’ve achieved your horsepower goals, it’s crucial to maintain your WRX for longevity:
- Regular Oil Changes: Keep the engine lubricated for optimal performance.
- Check Boost Levels: Regularly monitor boost levels to prevent overboosting.
- Inspect Intercooler: Periodically check the intercooler for any signs of damage or leaks.
Conclusion
Achieving 300+ wheel horsepower in your WRX using a top mount intercooler is an exciting journey. By selecting the right components, performing a proper installation, and tuning your vehicle correctly, you can unlock the full potential of your Subaru. Remember to maintain your car regularly to enjoy the performance for years to come.