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The EJ255 engine, known for its reliability and performance, has become a popular choice among automotive enthusiasts. With a stock power output of 227 horsepower, many owners seek to enhance their vehicle’s performance. This article explores how Grimmspeed upgrades can elevate the EJ255’s power output to over 350 horsepower.
Understanding the EJ255 Engine
The EJ255 is a turbocharged flat-four engine produced by Subaru. It features a DOHC design and is known for its robust performance characteristics. The engine is commonly found in models such as the Subaru Legacy GT and the Subaru Forester XT.
- Displacement: 2.5 liters
- Configuration: Flat-four (horizontally opposed)
- Turbocharged: Yes
- Stock horsepower: 227 hp
Why Upgrade the EJ255?
Upgrading the EJ255 engine offers several benefits, including increased horsepower, improved throttle response, and enhanced overall driving experience. Performance upgrades can also lead to better handling and acceleration, making the vehicle more enjoyable to drive.
Common Reasons for Upgrading
- Desire for increased performance
- Improved acceleration and speed
- Enhanced driving dynamics
- Personalization of the vehicle
Grimmspeed Upgrades Overview
Grimmspeed is a well-known manufacturer of performance parts for Subaru vehicles. Their upgrades for the EJ255 engine are designed to maximize performance while maintaining reliability. Key upgrades include turbochargers, intercoolers, and exhaust systems.
Key Grimmspeed Upgrades
- Grimmspeed Turbocharger
- Grimmspeed Front Mount Intercooler
- Grimmspeed Cat-Back Exhaust System
- Grimmspeed Boost Control Solenoid
Power Gains with Grimmspeed Upgrades
With the right combination of Grimmspeed upgrades, the EJ255 can achieve impressive power gains. Moving from the stock 227 horsepower to over 350 horsepower is possible with the right tuning and components.
Expected Power Gains
- Stock: 227 hp
- After Grimmspeed Turbo Upgrade: 300 hp
- With Intercooler and Exhaust: 350+ hp
Installation and Tuning
Installing Grimmspeed upgrades requires mechanical knowledge and expertise. It is recommended to have a professional perform the installation to ensure everything is done correctly. After installation, proper tuning is crucial to maximizing the engine’s performance and reliability.
Steps for Installation
- Remove stock components
- Install Grimmspeed turbocharger
- Install front mount intercooler
- Install cat-back exhaust system
- Perform ECU tuning
Conclusion
Upgrading the EJ255 engine with Grimmspeed parts can lead to significant power gains, transforming the driving experience. With careful installation and tuning, enthusiasts can enjoy a reliable engine that delivers over 350 horsepower, making their Subaru a true performance machine.