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The Mazda RX-7 is a beloved sports car known for its lightweight design and exceptional handling. However, enthusiasts have increasingly turned to LS swaps to maximize performance. Boosting your RX-7 LS swap to 650+ horsepower is an exciting challenge that requires careful planning and the right components. This article will explore forced induction options and supporting modifications to achieve your power goals.
Understanding Forced Induction
Forced induction refers to the process of increasing the amount of air entering the engine, allowing for more fuel to be burned and thus generating more power. The two primary types of forced induction are superchargers and turbochargers. Each has its advantages and disadvantages, and the choice largely depends on your specific goals and preferences.
Superchargers vs. Turbochargers
When considering forced induction for your RX-7 LS swap, it’s important to understand the differences between superchargers and turbochargers:
- Superchargers: Provide immediate power and throttle response, as they are mechanically driven by the engine. They can be less complex to install but may require more engine bay space.
- Turbochargers: Utilize exhaust gases to spin a turbine, providing power at higher RPMs. They are typically more efficient but can introduce turbo lag, requiring careful tuning and setup.
Choosing the Right Forced Induction System
Choosing the right forced induction system is crucial for achieving your horsepower goals. Here are some popular options for your RX-7 LS swap:
- Supercharger Kits: Brands like Edelbrock and Magnuson offer supercharger kits specifically designed for LS engines. These kits often include everything needed for installation.
- Turbo Kits: Companies like Precision Turbo and BorgWarner provide turbo kits that can significantly increase horsepower. Look for kits that include the necessary piping, intercooler, and wastegate.
Supporting Modifications for High Horsepower
To safely achieve 650+ horsepower, supporting modifications are essential. These upgrades will help your engine handle the increased power and ensure reliability.
Upgraded Fuel System
An upgraded fuel system is critical for high horsepower builds. Here are key components to consider:
- High-Flow Fuel Injectors: Opt for injectors capable of delivering the necessary fuel volume for your power goals.
- Upgraded Fuel Pump: A high-performance fuel pump is essential to maintain fuel pressure during high-demand situations.
- Fuel Pressure Regulator: An adjustable fuel pressure regulator can help fine-tune fuel delivery.
Enhanced Cooling System
With increased horsepower comes increased heat. An enhanced cooling system will help maintain optimal engine temperatures:
- Upgraded Radiator: A larger, more efficient radiator can help dissipate heat more effectively.
- Oil Cooler: An oil cooler can help maintain lower oil temperatures, which is crucial for engine longevity.
- Intercooler: If using a turbocharger, an intercooler is essential for cooling the intake air, improving performance and preventing knock.
Exhaust System Upgrades
An efficient exhaust system is vital for maximizing power and ensuring proper airflow:
- Headers: Long-tube headers can improve exhaust flow and reduce back pressure.
- High-Flow Catalytic Converter: A high-flow cat will help reduce restrictions in the exhaust system.
- Cat-Back Exhaust System: A performance cat-back system can enhance sound while improving flow.
Tuning Your RX-7 LS Swap
After installing forced induction and supporting mods, tuning is critical for maximizing performance and ensuring reliability. A proper tune will adjust fuel maps, ignition timing, and other parameters to optimize engine performance.
Choosing a Tuner
Select a tuner with experience in LS swaps and forced induction setups. Look for someone who can provide:
- Dyno Tuning: A dyno session allows for precise tuning and power measurements.
- Custom Maps: A tuner should be able to create custom maps tailored to your specific setup.
Conclusion
Boosting your RX-7 LS swap to 650+ horsepower is an achievable goal with the right forced induction system and supporting modifications. By carefully selecting components and ensuring proper tuning, you can enjoy the thrilling performance that comes with this powerhouse setup. Always prioritize reliability and safety to make the most of your high-performance build.