The Infiniti G37, a powerful and stylish sports coupe, is a popular choice for enthusiasts looking to enhance performance. One popular modification for boosting horsepower and torque is installing long tube headers, and ISR (Injen Supercharger Racing) is a well-known manufacturer in this space. This guide will delve into the specifics of ISR long tube headers for the G37, exploring their benefits, potential drawbacks, and what to consider before making this upgrade.
What are Long Tube Headers?
Before diving into the specifics of ISR's offering, let's understand what long tube headers are and how they work. Headers replace the factory exhaust manifolds. Long tube headers are characterized by their longer primary tubes, which extend further from the engine's exhaust ports than shorty headers. This longer length improves exhaust gas scavenging – a process where the exhaust pulses from one cylinder help to pull exhaust gases out of another, improving engine breathing efficiency.
Benefits of ISR Long Tube Headers on a G37
ISR long tube headers for the G37 are designed to deliver significant performance gains. These gains stem from the improved exhaust scavenging discussed above. The key benefits include:
- Increased Horsepower and Torque: By improving exhaust flow, ISR headers allow the engine to breathe more efficiently, resulting in noticeable increases in both horsepower and torque, especially in the mid-to-high RPM range.
- Improved Throttle Response: The enhanced exhaust scavenging contributes to a more responsive throttle, providing a more engaging driving experience.
- Enhanced Engine Sound: Long tube headers often produce a more aggressive and throatier exhaust note, appealing to many performance enthusiasts. The specific sound character will vary depending on the complete exhaust system configuration.
Are there any Drawbacks to ISR Long Tube Headers?
While long tube headers offer substantial performance benefits, there are a few potential drawbacks to consider:
- Potential for Reduced Low-End Torque: In some cases, long tube headers can slightly reduce low-end torque. This is not always the case, and often the increase in higher RPM torque more than compensates.
- Increased Exhaust Noise: The enhanced exhaust note can be louder than the stock system. This might be a benefit to some, but a drawback to others.
- Check Engine Light: Depending on the specific setup and the car's ECU, long tube headers may trigger a check engine light due to changes in the exhaust system's oxygen sensor readings. This often requires a tune to resolve.
- Installation Complexity: Installing long tube headers can be more complex than some other modifications, potentially requiring professional installation.
Do ISR Long Tube Headers require a Tune?
Yes, it is highly recommended to have your G37's ECU tuned after installing ISR long tube headers. A proper tune optimizes the air/fuel mixture and ignition timing to take full advantage of the increased exhaust flow, preventing potential engine damage and maximizing the performance gains. A tune will also often help address the potential check engine light issue.
What are the Alternatives to ISR Long Tube Headers?
Several other manufacturers produce long tube headers for the G37, offering varying price points and features. Researching these alternatives is advisable to find the best option for your needs and budget. Shorty headers are another alternative, offering a less drastic change but often easier installation.
How much do ISR Long Tube Headers cost?
The price of ISR long tube headers for the G37, like other performance modifications, varies depending on the retailer and any ongoing sales or promotions. It's best to check current pricing directly from authorized retailers or online marketplaces.
What's the warranty on ISR Long Tube Headers?
Warranty information should be obtained directly from ISR or the retailer from which you purchase the headers. Warranties vary and may be subject to specific conditions.
Will installing ISR Long Tube Headers void my car's warranty?
Installing aftermarket parts like headers may void parts of your car's manufacturer's warranty, particularly those related to the exhaust system. Check with your dealership or consult your warranty documents for specific details. A professional installation might help mitigate this risk, as improper installation could void any warranty offered by ISR themselves.
This comprehensive guide provides a thorough overview of ISR long tube headers for the Infiniti G37. Remember to always consult with a qualified mechanic or tuner before undertaking any performance modifications. Remember to always prioritize safe and responsible modification practices.
