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The Subaru WRX has long been a favorite among car enthusiasts, known for its performance and tuning potential. With the right modifications, it can reach impressive power levels. This article provides a detailed cost breakdown for a 450 HP WRX E85 conversion, covering everything from intake to exhaust and supporting modifications.
Understanding E85 Conversion
E85 is a blend of 85% ethanol and 15% gasoline, offering higher octane levels and the potential for increased power. However, converting a WRX to run on E85 requires specific modifications to ensure optimal performance and reliability.
Cost Breakdown
1. Intake Modifications
The intake system is crucial for maximizing airflow to the engine. Upgrading to a high-performance intake can significantly improve throttle response and power delivery.
- Aftermarket intake system: $300 – $600
- Air filter replacement: $50 – $100
2. Fuel System Upgrades
To effectively run E85, the fuel system must be upgraded to handle the increased fuel flow and different chemical properties of ethanol.
- Upgraded fuel injectors: $600 – $1,200
- High-flow fuel pump: $150 – $300
- Fuel lines and fittings: $100 – $200
3. Engine Management
Proper tuning is essential for maximizing performance and ensuring the engine runs smoothly on E85. This typically involves the use of aftermarket engine management systems.
- ECU tuning: $500 – $1,000
- Access to tuning software: $200 – $400
4. Exhaust System Enhancements
An upgraded exhaust system helps to reduce back pressure and improve exhaust flow, which is critical for achieving higher horsepower.
- Aftermarket downpipe: $400 – $800
- Cat-back exhaust system: $600 – $1,200
5. Turbocharger Upgrades
To reach 450 HP, a more powerful turbocharger may be necessary. Upgrading the turbo can provide the additional boost needed for higher power levels.
- Upgraded turbocharger: $1,200 – $2,500
- Turbo installation kit: $200 – $500
6. Supporting Mods
Additional modifications may be required to support the increased power levels, including drivetrain and cooling upgrades.
- Upgraded intercooler: $500 – $1,000
- Performance clutch: $400 – $800
- Oil cooler: $200 – $400
Total Estimated Cost
When adding up the costs of all the necessary modifications for a 450 HP WRX E85 conversion, the total estimated cost can range significantly based on the quality of parts and labor involved.
- Intake modifications: $350 – $700
- Fuel system upgrades: $850 – $1,700
- Engine management: $700 – $1,400
- Exhaust system enhancements: $1,000 – $2,000
- Turbocharger upgrades: $1,400 – $3,000
- Supporting mods: $1,100 – $2,200
Overall, the total cost for a comprehensive E85 conversion for a Subaru WRX aiming for 450 HP can range from approximately $4,400 to $11,000, depending on the choices made regarding parts and labor.
Conclusion
Converting a WRX to E85 and achieving 450 HP is an exciting project that requires careful planning and budgeting. By understanding the costs associated with each modification, enthusiasts can make informed decisions and enjoy the enhanced performance that comes with the conversion.