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The 13B-REW engine, a part of Mazda’s renowned Wankel rotary family, is known for its lightweight design and high-revving capabilities. Achieving 400 horsepower from this engine is a popular goal among enthusiasts. In this article, we will explore the top performance modifications that can help you reach this target.
Understanding the 13B-REW Engine
The 13B-REW is a 1.3-liter rotary engine that has gained a cult following due to its unique design and performance potential. It features a twin-rotor layout and is known for its ability to produce high horsepower relative to its size. To unlock its full potential, specific modifications are necessary.
Key Performance Modifications
1. Upgraded Turbocharger
One of the most effective ways to increase horsepower in the 13B-REW is by upgrading the turbocharger. A larger turbo can significantly improve airflow and boost pressure, leading to more power.
- Consider a Garrett GT series turbo for optimal performance.
- Ensure proper tuning to match the new turbo specifications.
2. High-Performance Fuel Injectors
To support the increased airflow from the upgraded turbo, high-performance fuel injectors are essential. These injectors provide the necessary fuel volume to match the engine’s air intake, ensuring optimal combustion.
- Look for injectors rated for at least 800cc/min.
- Consider using a fuel pressure regulator to maintain consistent pressure.
3. ECU Remapping
After making modifications, remapping the engine control unit (ECU) is crucial. This process adjusts fuel maps, ignition timing, and boost levels to maximize performance and reliability.
- Use a reputable tuner familiar with rotary engines.
- Consider standalone ECU options for advanced tuning capabilities.
4. Exhaust System Upgrade
A high-flow exhaust system can help reduce back pressure and improve exhaust flow, which is vital for high horsepower applications. A performance exhaust not only enhances power but also gives the car a more aggressive sound.
- Opt for a 3-inch diameter exhaust system for maximum flow.
- Consider a high-performance catalytic converter or test pipe.
5. Intake System Improvements
Enhancing the intake system allows for better airflow into the engine. A cold air intake system can help lower intake temperatures, improving overall performance.
- Choose an intake system designed specifically for the 13B-REW.
- Consider a larger throttle body for improved airflow.
6. Porting the Engine
Porting the engine involves modifying the rotor housing to improve airflow and combustion efficiency. This modification can significantly increase horsepower and responsiveness.
- Consider street porting for a balance of performance and drivability.
- Race porting can yield maximum power but may affect daily usability.
Supporting Modifications
In addition to the major performance mods, several supporting modifications can enhance reliability and performance.
1. Upgraded Cooling System
High horsepower builds generate more heat, making an upgraded cooling system essential. A larger radiator and performance intercooler can help manage engine temperatures effectively.
- Consider a dual-core radiator for improved cooling capacity.
- Install a front-mount intercooler for better intake air temperatures.
2. Strengthened Drivetrain Components
With increased power comes the need for stronger drivetrain components. Upgrading the clutch, flywheel, and differential can help handle the added stress.
- Look for a performance clutch rated for higher torque.
- Consider a limited-slip differential for better traction.
3. Lightweight Components
Reducing weight can improve the overall performance of the 13B-REW. Lightweight components such as a carbon fiber hood or aluminum wheels can enhance acceleration and handling.
- Consider replacing heavy factory parts with lightweight alternatives.
- Focus on weight reduction in the front end for better balance.
Conclusion
Achieving 400 horsepower with the 13B-REW engine is an exciting challenge that requires careful planning and the right modifications. By implementing the performance mods discussed in this article, you can unlock the full potential of this iconic rotary engine and enjoy a thrilling driving experience.