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The Toyota Celica GT-Four, known for its rally heritage and turbocharged performance, has captured the hearts of car enthusiasts worldwide. One question that frequently arises among owners and tuners is whether it is feasible to reach 350 horsepower with the right performance upgrades. This article explores various modifications, focusing on brands like HKS, Tomei, and injector upgrades that can help achieve this goal.
Understanding the Celica GT-Four
The Celica GT-Four, particularly the ST185 and ST205 models, is equipped with a robust 2.0-liter turbocharged inline-four engine. This engine is known for its potential to handle increased power with the right modifications. Before diving into performance upgrades, it is essential to understand the factory specifications and limitations of the GT-Four.
- Engine Type: 2.0L Turbocharged Inline-Four
- Factory Horsepower: Approximately 200 HP
- Torque: Around 200 lb-ft
Setting the Stage for Performance Upgrades
To achieve 350 HP, a combination of upgrades is necessary. Start with the basics, ensuring that the engine is in good health before installing performance parts. Regular maintenance, including oil changes and inspections, is crucial to support higher power levels.
Essential Upgrades
- Upgraded Turbocharger
- High-Performance Intercooler
- Enhanced Exhaust System
- ECU Remapping
These upgrades will significantly increase airflow and efficiency, laying the groundwork for additional horsepower gains.
HKS Performance Upgrades
HKS is a well-known brand in the tuning community, offering a range of products specifically designed for the Celica GT-Four. Their upgrades focus on enhancing performance through improved airflow, turbo efficiency, and engine management.
- HKS GT Turbo Kit: This kit replaces the factory turbo with a more efficient unit, capable of producing higher boost levels.
- HKS Super Mega Flow Filter: A high-flow air filter that improves intake efficiency, allowing the engine to breathe better.
- HKS Exhaust System: A performance exhaust that reduces back pressure and enhances exhaust flow, contributing to power gains.
Tomei Performance Upgrades
Tomei is another reputable brand that offers high-quality performance parts for the Celica GT-Four. Their products are designed to maximize the engine’s potential while ensuring reliability.
- Tomei Poncams: Upgraded camshafts that improve engine breathing and increase power across the RPM range.
- Tomei Turbo Elbow: A performance elbow that enhances turbo response and reduces turbo lag.
- Tomei Fuel Pump: An upgraded fuel pump that ensures adequate fuel delivery for higher horsepower levels.
Injector Upgrades
To support increased horsepower, larger fuel injectors are essential. Upgrading to high-flow injectors ensures that the engine receives enough fuel to match the increased air from the performance upgrades.
- Injector Dynamics ID1000: These injectors provide excellent flow rates and are ideal for high-performance applications.
- RC Engineering 750cc Injectors: A reliable option that balances performance and affordability.
ECU Tuning
After installing performance upgrades, ECU tuning is vital to optimize engine performance. A custom tune will ensure that the air-fuel ratio is correct and that the engine runs efficiently at higher power levels.
- Standalone ECU Options: Consider upgrading to a standalone ECU for more control over engine parameters.
- Reflash Options: Many tuners offer reflashing services for factory ECUs to accommodate performance upgrades.
Supporting Modifications
In addition to the primary upgrades, several supporting modifications can enhance the overall performance of the Celica GT-Four.
- Upgraded Suspension: A stiffer suspension setup improves handling and stability at higher speeds.
- Brake Upgrades: Larger brake kits ensure better stopping power, which is crucial for high-performance driving.
- Lightweight Wheels: Reducing unsprung weight improves acceleration and handling.
Conclusion
Reaching 350 horsepower on a Toyota Celica GT-Four is achievable with a well-planned approach to performance upgrades. By utilizing parts from reputable brands like HKS and Tomei, along with proper ECU tuning and supporting modifications, enthusiasts can unlock the full potential of this iconic vehicle. As always, ensure that all modifications are performed by experienced professionals to guarantee reliability and safety.