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The Subaru WRX is renowned for its performance and tuning potential. With the addition of a flex fuel kit, enthusiasts can unlock even more power. This article explores the best exhaust and intake modifications to help you achieve a remarkable 350 horsepower.
Understanding Flex Fuel Kits
Flex fuel kits allow your WRX to run on a mixture of gasoline and ethanol. Ethanol has a higher octane rating, which means it can support more aggressive tuning and increase power output.
Benefits of Upgrading Exhaust and Intake
Upgrading your exhaust and intake systems is essential when aiming for higher horsepower. These modifications improve airflow, enhance engine efficiency, and contribute to a more aggressive sound.
Improved Airflow
Better airflow means more oxygen for combustion, leading to increased power. An upgraded intake and exhaust system work together to optimize engine performance.
Enhanced Engine Efficiency
More efficient engines run cooler and produce less waste. This efficiency can translate to better fuel economy, even with performance mods.
Top Exhaust Mods for WRX Flex Fuel Kit
Choosing the right exhaust system is crucial for maximizing your WRX’s potential. Here are some of the best options available:
- Cat-Back Exhaust Systems: These systems replace the exhaust from the catalytic converter back, improving flow and sound.
- Downpipes: Upgrading to a high-flow downpipe can significantly reduce back pressure and increase turbo efficiency.
- Axle-Back Exhausts: A simpler option that enhances sound without altering the entire exhaust layout.
Recommended Exhaust Systems
Here are some highly rated exhaust systems that can help you reach 350 hp:
- Invidia Q300 Cat-Back Exhaust: Known for its aggressive sound and performance gains.
- COBB Tuning Downpipe: A top choice for reducing turbo lag and improving power delivery.
- GrimmSpeed Turbo-Back Exhaust: Offers a complete solution with excellent fit and finish.
Top Intake Mods for WRX Flex Fuel Kit
Upgrading the intake system is just as important as the exhaust. Here are the best intake mods to consider:
- Cold Air Intakes: These systems draw cooler air from outside the engine bay, improving combustion efficiency.
- Short Ram Intakes: A more compact option that can provide quicker throttle response.
- High-Performance Air Filters: Replacing the stock filter with a high-flow option can enhance airflow.
Recommended Intake Systems
To maximize your WRX’s power with a flex fuel kit, consider these intake systems:
- K&N 69 Series Typhoon Intake: A well-known brand that offers excellent performance and filtration.
- COBB Tuning SF Intake: Designed specifically for the WRX, this intake provides a perfect balance of airflow and filtration.
- AEM Cold Air Intake: Offers a significant increase in horsepower and torque while ensuring optimal air temperature.
Installation Tips for Exhaust and Intake Mods
Installing exhaust and intake mods can be a DIY project, but here are some tips to ensure a successful installation:
- Gather the Right Tools: Make sure you have all necessary tools before starting the installation.
- Follow Manufacturer Instructions: Each product will have specific installation guidelines that should be followed closely.
- Consider Professional Help: If you’re unsure about the installation, hiring a professional can save time and prevent mistakes.
Conclusion
Upgrading your WRX’s exhaust and intake systems is a crucial step towards achieving 350 horsepower with a flex fuel kit. By investing in quality parts and following best practices for installation, you can enhance your vehicle’s performance and enjoy the thrill of driving a truly powerful machine.