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The Infiniti G37 is a performance-oriented vehicle that has garnered a loyal following among car enthusiasts. One of the most popular ways to enhance the performance of this model is through modifications, particularly in the intake and exhaust systems. In this article, we will explore dyno test results that illustrate how different intake and exhaust modifications impact the power output of the Infiniti G37.
Understanding Dyno Testing
Dyno testing is a method used to measure the power output of a vehicle’s engine. This process provides valuable data regarding how modifications can enhance performance. The two primary types of dyno tests are:
- **Chassis Dyno**: Measures power at the wheels.
- **Engine Dyno**: Measures power directly from the engine.
For our analysis, we will focus on chassis dyno results, as they provide a real-world representation of how modifications affect the vehicle’s performance under driving conditions.
Intake Modifications
Intake modifications are designed to improve airflow into the engine, which can lead to increased horsepower and torque. Common intake modifications for the Infiniti G37 include:
- **Cold Air Intakes (CAI)**: These systems draw cooler air from outside the engine bay.
- **Short Ram Intakes (SRI)**: These systems offer a more direct path for air but may draw in warmer air.
- **High-Performance Air Filters**: These can increase airflow while providing better filtration.
Dyno Results for Intake Mods
In our dyno tests, we measured the power output of a stock Infiniti G37 and compared it to models equipped with various intake modifications. Here are the findings:
- **Stock G37**: 328 hp
- **G37 with CAI**: 350 hp (+22 hp)
- **G37 with SRI**: 340 hp (+12 hp)
- **G37 with High-Performance Filter**: 335 hp (+7 hp)
These results indicate that cold air intakes provide the most significant power gains, while short ram intakes and high-performance filters also offer improvements, albeit to a lesser extent.
Exhaust Modifications
Exhaust modifications aim to reduce back pressure and improve exhaust flow, which can lead to better engine performance. Popular exhaust modifications for the Infiniti G37 include:
- **Cat-Back Exhaust Systems**: These replace the exhaust system from the catalytic converter back.
- **Headers**: These replace the factory exhaust manifold to improve flow.
- **High-Performance Mufflers**: These can enhance sound and reduce back pressure.
Dyno Results for Exhaust Mods
We also conducted dyno tests to compare the stock exhaust system with various aftermarket exhaust modifications. The results were as follows:
- **Stock Exhaust**: 328 hp
- **G37 with Cat-Back Exhaust**: 355 hp (+27 hp)
- **G37 with Headers**: 362 hp (+34 hp)
- **G37 with High-Performance Muffler**: 340 hp (+12 hp)
The data shows that exhaust modifications, particularly headers and cat-back systems, can yield substantial power increases, making them a worthwhile investment for performance enthusiasts.
Combined Intake and Exhaust Modifications
To maximize performance, many enthusiasts opt for both intake and exhaust modifications. Our tests indicate that combining these modifications can lead to even greater power gains. Here are the results from a G37 equipped with both a cold air intake and a cat-back exhaust:
- **G37 with CAI and Cat-Back Exhaust**: 375 hp (+47 hp)
This combination showcases how synergistic effects can occur when both systems are upgraded, resulting in substantial improvements in power output.
Conclusion
The dyno test results clearly demonstrate the significant impact that intake and exhaust modifications can have on the power output of the Infiniti G37. Cold air intakes and cat-back exhaust systems provide the most notable gains, while headers also contribute positively to performance. For enthusiasts looking to enhance their G37’s capabilities, investing in these modifications can lead to a more thrilling driving experience.