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The EJ255 engine, known for its robust performance and tuning potential, has become a popular choice among automotive enthusiasts looking to achieve high horsepower figures. In this article, we will break down the costs associated with building a 450 HP EJ255 performance engine using APS Turbo and Cosworth pistons.
Understanding the EJ255 Engine
The EJ255 is a turbocharged flat-four engine produced by Subaru. It is renowned for its durability and ability to handle significant power upgrades. To achieve 450 horsepower, several components must be upgraded to ensure reliability and performance.
Key Components for the Build
- APS Turbo Kit
- Cosworth Pistons
- Upgraded Fuel System
- ECU Tuning
- Performance Exhaust System
- Upgraded Intercooler
- Reinforced Engine Internals
Cost Breakdown
1. APS Turbo Kit
The APS Turbo Kit is essential for achieving the desired power output. The cost of the kit typically includes the turbocharger, manifold, and necessary piping.
- APS Turbo Kit: $2,500
- Installation: $500
2. Cosworth Pistons
Cosworth pistons are designed for high performance and durability. They are a critical component in achieving the desired compression ratio and power output.
- Cosworth Pistons: $800
- Installation and Machining: $600
3. Upgraded Fuel System
To support the increased horsepower, an upgraded fuel system is necessary. This includes high-flow fuel injectors and a performance fuel pump.
- High-Flow Fuel Injectors: $400
- Performance Fuel Pump: $250
- Installation: $200
4. ECU Tuning
ECU tuning is crucial for optimizing the engine’s performance with the new components. A professional tune ensures the engine runs efficiently and safely.
- ECU Tune: $600
5. Performance Exhaust System
An upgraded exhaust system enhances the engine’s airflow, contributing to improved performance and sound.
- Performance Exhaust: $1,000
- Installation: $300
6. Upgraded Intercooler
A larger intercooler helps to cool the intake air, which is essential for maintaining power and efficiency under boost.
- Upgraded Intercooler: $700
- Installation: $200
7. Reinforced Engine Internals
To ensure reliability at high horsepower levels, reinforcing the engine internals is necessary. This may include upgraded rods and bearings.
- Upgraded Rods and Bearings: $1,200
- Installation: $500
Total Cost Summary
Now that we have broken down the individual components and their costs, let’s summarize the total expenses for the 450 HP EJ255 performance build.
- APS Turbo Kit: $3,000
- Cosworth Pistons: $1,400
- Upgraded Fuel System: $850
- ECU Tuning: $600
- Performance Exhaust System: $1,300
- Upgraded Intercooler: $900
- Reinforced Engine Internals: $1,700
Final Thoughts
Building a 450 HP EJ255 engine with APS Turbo and Cosworth pistons involves significant investment but can yield impressive performance gains. Understanding the cost breakdown helps enthusiasts plan their builds effectively. Always consider professional installation and tuning for the best results.