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The Mazda RX-7, particularly the 13B-REW model, is a beloved platform for car enthusiasts and tuners alike. With its lightweight design and rotary engine, it offers a unique driving experience. However, to unleash its full potential, many owners seek to upgrade their drivetrain to achieve impressive horsepower figures. In this article, we will explore how to achieve 420+ horsepower through turbo and fuel system modifications.
Understanding the 13B-REW Engine
The 13B-REW engine is a two-rotor rotary engine known for its high RPM capabilities and lightweight design. This engine is capable of producing significant power, especially when modified. Understanding its components and how they work together is crucial for any upgrade.
- Rotary design with two rotors
- Lightweight and compact
- High revving capabilities
Key Components for Upgrading to 420+ HP
To achieve 420+ horsepower, specific components must be upgraded or replaced. These components include the turbocharger, fuel system, and engine management system. Each plays a vital role in maximizing performance.
Turbocharger Upgrade
The turbocharger is one of the most significant upgrades you can make. A larger turbo will increase airflow and boost pressure, leading to more power. Consider the following options:
- Garrett GT28 or GT30 series turbos
- Precision Turbo 6266
- Holset HX35
Each of these turbos has its advantages, depending on your power goals and driving style. Ensure proper installation and tuning to maximize their potential.
Fuel System Modifications
Upgrading the fuel system is essential when increasing horsepower. The stock fuel system may not provide enough fuel to support higher power levels. Key modifications include:
- Upgraded fuel injectors (1000cc or larger)
- High-flow fuel pump
- Fuel pressure regulator
These upgrades ensure that the engine receives the necessary fuel for combustion, especially under boost conditions.
Engine Management System
To achieve optimal performance with your turbo and fuel system upgrades, a reliable engine management system is crucial. It allows for precise tuning of fuel maps and ignition timing. Popular options include:
- Haltech Elite 1500
- Mazda RX-7 ECU swap with standalone options
- AEM Infinity Series
Proper tuning will maximize the performance of your upgrades and ensure reliability.
Supporting Modifications
In addition to the main upgrades, consider supporting modifications that enhance performance and reliability:
- Upgraded intercooler for better cooling
- Performance exhaust system to reduce back pressure
- Lightweight flywheel for improved throttle response
These modifications can help improve overall performance and ensure that the engine operates efficiently under higher power levels.
Conclusion
Upgrading the 13B-REW drivetrain to achieve 420+ horsepower is an exciting journey for any RX-7 enthusiast. By focusing on turbo upgrades, fuel system enhancements, and proper engine management, you can unlock the full potential of this iconic rotary engine. Always remember to tune your setup for reliability and performance to enjoy the full benefits of your modifications.