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The Subaru WRX is known for its performance and tuning potential. Among the many aftermarket modifications available, flex fuel kits have gained popularity. In this article, we will compare two prominent options: the Perrin and AEM flex fuel kits. We will explore their power gains, costs, and overall performance impact on the Subaru WRX.
Understanding Flex Fuel Kits
Flex fuel kits allow vehicles to run on a mixture of gasoline and ethanol, which can lead to increased performance and efficiency. These kits typically include a fuel sensor, upgraded injectors, and a tuning solution to optimize the engine’s performance based on the fuel type.
Perrin Flex Fuel Kit Overview
The Perrin flex fuel kit is designed specifically for the Subaru WRX, providing a seamless integration with the vehicle’s existing fuel system. This kit promises enhanced performance while maintaining reliability.
Power Gains
Owners of the Subaru WRX who have installed the Perrin flex fuel kit report significant power gains. On average, users experience:
- Up to 20% increase in horsepower
- Improved torque delivery across the power band
- Enhanced throttle response
Costs
The cost of the Perrin flex fuel kit typically ranges between $600 and $800, depending on the retailer and any additional components required for installation. It’s essential to factor in potential tuning costs as well.
AEM Flex Fuel Kit Overview
The AEM flex fuel kit is another popular choice among Subaru WRX enthusiasts. This kit also aims to enhance performance while providing flexibility in fuel choices.
Power Gains
Similar to the Perrin kit, the AEM flex fuel kit offers impressive power gains. Users report:
- Up to 25% increase in horsepower
- Better torque management
- Improved fuel efficiency with ethanol blends
Costs
The AEM flex fuel kit is generally priced between $500 and $700. As with the Perrin kit, additional costs for tuning and installation should be considered.
Comparison of Performance Gains
When comparing the power gains from both kits, it’s clear that both options provide substantial improvements. However, the AEM kit tends to offer slightly higher horsepower gains on average.
Cost Analysis
In terms of cost, the AEM flex fuel kit is generally more affordable than the Perrin kit. However, the overall value should consider the power gains and performance enhancements each kit provides.
Installation Considerations
Both kits require a level of mechanical knowledge for installation. While some enthusiasts may choose to install the kits themselves, professional installation is recommended to ensure optimal performance and reliability.
Conclusion
Choosing between the Perrin and AEM flex fuel kits for your Subaru WRX ultimately depends on your performance goals and budget. Both kits offer significant power gains and improved efficiency, making them excellent choices for those looking to enhance their vehicle’s performance.
As always, ensure proper tuning and installation to maximize the benefits of your chosen flex fuel kit.