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The VQ37 engine, known for its robust performance and reliability, is a popular choice among car enthusiasts looking to build a powerful yet drivable vehicle. When aiming for 450 horsepower, selecting the right supporting modifications is crucial to maintain daily drivability while maximizing performance.
Understanding the VQ37 Engine
The VQ37 is a 3.7-liter V6 engine that powers several Nissan and Infiniti models. It is known for its smooth power delivery and potential for tuning. To achieve a target of 450 horsepower, it’s essential to understand the engine’s capabilities and limitations.
Essential Supporting Mods
When building a VQ37 to reach 450 HP, several modifications are crucial for maintaining performance and drivability. Below are the top supporting mods to consider:
- Cold Air Intake System: Enhances airflow to the engine, improving throttle response and power.
- High-Performance Exhaust System: Reduces back pressure and allows for better exhaust flow, increasing horsepower.
- Tune/ECU Remapping: Optimizes engine performance by adjusting fuel maps, ignition timing, and other parameters.
- Upgraded Fuel Injectors: Provides the necessary fuel supply for increased horsepower and performance.
- High-Performance Headers: Improves exhaust flow and enhances the overall efficiency of the engine.
- Aftermarket Intercooler: Essential for turbocharged setups, it helps keep intake temperatures low, improving performance.
- Upgraded Radiator: Ensures optimal cooling, especially under increased load and performance conditions.
- Performance Clutch: Necessary for handling increased power while providing smooth engagement.
Detailed Breakdown of Each Modification
Cold Air Intake System
A cold air intake system replaces the factory air intake with a more efficient design, allowing cooler air to enter the engine. Cooler air is denser and contains more oxygen, which can lead to improved combustion and increased horsepower. Popular brands include K&N and Stillen.
High-Performance Exhaust System
Upgrading to a high-performance exhaust system not only enhances the sound of your vehicle but also significantly reduces back pressure. This modification allows the engine to expel exhaust gases more efficiently, which can lead to noticeable power gains. Look for brands like Borla or Nismo for quality options.
Tune/ECU Remapping
A proper tune is essential when making significant modifications to your engine. Remapping the ECU can optimize fuel delivery and ignition timing, allowing your engine to perform at its best. This can be done through handheld tuners or by visiting a professional tuning shop.
Upgraded Fuel Injectors
To support higher horsepower levels, upgrading fuel injectors is necessary. Stock injectors may not supply enough fuel for increased power demands. Aftermarket injectors can provide a more significant flow rate, ensuring that your engine receives the fuel it needs.
High-Performance Headers
High-performance headers improve exhaust flow by reducing restrictions. They can enhance the engine’s efficiency and power output significantly. Consider brands like JBA or Stillen for quality header options that fit the VQ37.
Aftermarket Intercooler
If your VQ37 is boosted, an aftermarket intercooler is vital for maintaining performance. It cools the intake air, preventing heat soak and ensuring optimal performance during extended driving sessions. Look for options from companies like Mishimoto or Greddy.
Upgraded Radiator
With increased power comes increased heat. An upgraded radiator can help maintain optimal engine temperatures, especially during spirited driving. Consider a larger capacity radiator or one with improved cooling efficiency.
Performance Clutch
As power levels increase, the factory clutch may struggle to handle the additional torque. Upgrading to a performance clutch ensures reliable power transfer and prevents slippage, providing a smooth driving experience. Brands like ACT or Exedy offer great options.
Conclusion
Building a 450 HP VQ37 requires careful consideration of supporting modifications to maintain daily drivability. By focusing on the essential upgrades listed above, enthusiasts can achieve impressive power levels without sacrificing reliability. Always remember to consult with professionals when making significant modifications to ensure the best results for your build.