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The Mazda RX-7 is a legendary sports car known for its unique rotary engine and lightweight design. Among the various iterations of the RX-7, the 13B-REW engine stands out for its performance potential. This article outlines a step-by-step upgrade path for enthusiasts looking to transform their stock RX-7 into a performance monster.
Understanding the 13B-REW Engine
The 13B-REW is a 1.3-liter twin-rotor rotary engine that delivers a unique driving experience. This engine is known for its high-revving capabilities and lightweight construction, making it a favorite among performance enthusiasts. To maximize its potential, understanding its components and capabilities is essential.
- Lightweight design for better handling
- High-revving nature allows for increased power output
- Unique rotary engine architecture
Step 1: Performance Exhaust System
The first step in enhancing your RX-7’s performance is upgrading the exhaust system. A performance exhaust allows for better airflow, which can significantly increase horsepower and torque.
- Replace the stock exhaust manifold with a performance manifold.
- Install a high-flow catalytic converter.
- Choose a cat-back exhaust system for improved sound and performance.
Step 2: Intake System Upgrade
Improving the intake system is crucial for maximizing engine performance. A high-performance intake system increases airflow to the engine, allowing it to breathe better and produce more power.
- Install a high-flow air filter.
- Replace the stock intake manifold with a performance version.
- Consider a cold air intake system for cooler, denser air.
Step 3: Engine Management System
Upgrading the engine management system is vital for tuning the engine to handle increased airflow and fuel delivery. A standalone engine management system allows for precise tuning and better performance.
- Install a standalone ECU for better control.
- Get a professional tune to optimize performance.
- Consider adding a wideband O2 sensor for accurate air-fuel ratio monitoring.
Step 4: Turbocharging the 13B-REW
For enthusiasts seeking significant power gains, adding a turbocharger is a popular option. Turbocharging increases the amount of air entering the engine, resulting in more power.
- Choose a suitable turbocharger for your power goals.
- Upgrade the intercooler to handle increased boost.
- Install a blow-off valve to manage boost pressure.
Step 5: Fuel System Upgrade
With increased power comes the need for more fuel. Upgrading the fuel system ensures that the engine receives the necessary fuel to match the increased airflow from previous upgrades.
- Install larger fuel injectors to increase fuel delivery.
- Upgrade the fuel pump to support higher flow rates.
- Consider a fuel pressure regulator for better control.
Step 6: Suspension and Brake Upgrades
As power increases, so does the need for better handling and stopping capabilities. Upgrading the suspension and brakes is essential for safely managing the newfound performance.
- Install performance shocks and struts for better handling.
- Upgrade to larger brake rotors and calipers for improved stopping power.
- Consider sway bars for better cornering stability.
Step 7: Weight Reduction
Reducing weight can significantly improve performance. By removing unnecessary components and replacing parts with lighter alternatives, the RX-7 can become more agile and responsive.
- Remove the spare tire and unnecessary interior components.
- Replace heavy stock parts with lightweight alternatives.
- Consider lightweight wheels for better performance.
Step 8: Final Tuning and Testing
After all upgrades are complete, it’s crucial to have the vehicle professionally tuned and tested. This ensures that all components work harmoniously and the vehicle performs optimally.
- Schedule a dyno session to measure power output.
- Make adjustments based on performance data.
- Test drive to evaluate handling and braking performance.
Conclusion
Transforming a stock Mazda RX-7 into a performance monster is an exciting journey that requires careful planning and execution. By following this step-by-step upgrade path, enthusiasts can unlock the full potential of the 13B-REW engine and enjoy the thrill of driving a truly unique sports car.