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The Infiniti G35 is a popular sports sedan known for its performance and tuning potential. One of the most common modifications enthusiasts make is upgrading the cold air intake system. In this article, we will compare the dyno results of two well-known brands: K&N and Injen. Both brands offer cold air intakes that promise increased horsepower and improved engine efficiency. But how do they actually perform on the dyno? Let’s dive into the details.
Understanding Cold Air Intakes
Cold air intakes are designed to improve engine performance by allowing cooler air to enter the engine. Cooler air is denser and contains more oxygen, which can lead to better combustion and increased power. Upgrading to a performance cold air intake can also enhance the sound of the engine, making it more aggressive and sporty.
Overview of K&N and Injen
K&N and Injen are two of the most recognized brands in the aftermarket performance parts industry. Here’s a brief overview of each:
- K&N: Known for their high-flow air filters and performance intakes, K&N has been in the industry for decades. Their products are designed to increase airflow while providing excellent filtration.
- Injen: Injen specializes in performance intakes and exhaust systems. Their intakes are engineered to optimize airflow and maximize performance gains.
Dyno Testing Methodology
To accurately compare the performance of the K&N and Injen cold air intakes, we conducted a series of dyno tests on a stock Infiniti G35. The tests were performed under controlled conditions to ensure consistency. Key aspects of the testing methodology included:
- Baseline runs with the stock intake system to establish a reference point.
- Installation of the K&N cold air intake followed by multiple dyno runs to measure horsepower and torque gains.
- Installation of the Injen cold air intake and subsequent dyno runs for comparison.
- Monitoring of air-fuel ratios to ensure optimal performance and engine safety.
K&N Cold Air Intake Results
The K&N cold air intake showed promising results during testing. Here are the key findings:
- Peak Horsepower Gain: The K&N intake produced a peak horsepower gain of 12 horsepower over the stock intake.
- Peak Torque Gain: The torque increased by 10 lb-ft at 4,500 RPM.
- Air-Fuel Ratio: The air-fuel ratio remained within safe limits throughout the testing.
Injen Cold Air Intake Results
The Injen cold air intake also delivered impressive results. Here’s how it compared:
- Peak Horsepower Gain: The Injen intake achieved a peak horsepower gain of 15 horsepower over the stock intake.
- Peak Torque Gain: The torque increased by 12 lb-ft at 4,600 RPM.
- Air-Fuel Ratio: The air-fuel ratio was stable and optimal during the runs.
Comparative Analysis
When comparing the results from both cold air intakes, several observations can be made:
- The Injen cold air intake outperformed the K&N in terms of peak horsepower and torque gains.
- Both intakes maintained safe air-fuel ratios, indicating good performance without risking engine damage.
- The choice between K&N and Injen may come down to personal preference regarding sound, ease of installation, and brand loyalty.
Conclusion
In conclusion, both the K&N and Injen cold air intakes provide substantial performance benefits for the Infiniti G35. While the Injen intake showed slightly better gains in our testing, the K&N intake remains a solid choice for enthusiasts looking to enhance their vehicle’s performance. Ultimately, the decision should be based on individual preferences and specific performance goals.
Additional Considerations
Before making a purchase, consider the following factors:
- Sound: Different intakes produce various sounds; listen to audio clips if available.
- Installation: Check for ease of installation and whether professional help is needed.
- Warranty: Look into the warranty offered by the manufacturer for peace of mind.
By taking these factors into account, you can make a more informed decision on which cold air intake is the best fit for your Infiniti G35.