When considering exhaust modifications, one common question that arises among car enthusiasts is whether a G37 catback exhaust will fit on a 370Z. Both the Nissan 370Z and Infiniti G37 share similar engineering roots, but are there enough differences to impact exhaust system compatibility? You can explore our range of catback exhaust for both vehicles and find the best fit for your needs.
Understanding the Compatibility Between G37 and 370Z Exhaust Systems
Before diving into the specifics of installing a G37 catback exhaust on a 370Z, it’s important to understand the similarities and differences between the exhaust systems of both vehicles.
Exhaust System Basics for G37 and 370Z
Both the G37 and 370Z are equipped with V6 engines, which means they share some similarities in their exhaust configurations. However, the exhaust systems themselves are tailored to the specific design and needs of each model. The key components include exhaust manifolds, catalytic converters, mid-pipes, mufflers, and exhaust tips. In many cases, the piping diameter and layout of these components are relatively similar, which is why some G37 parts can fit on a 370Z.
However, there are still some distinct differences. For instance, the overall length of the systems, the positioning of the hangers, and even the exhaust tips may vary slightly, which can affect the ease of installation.
Key Differences That Affect Fitment
The most significant challenge when fitting a G37 catback exhaust onto a 370Z lies in the finer details of the exhaust design. Although the pipe diameter and flow characteristics are similar, the following factors may require modification:
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Exhaust Hangers and Mounting Points: The G37 and 370Z may have slightly different hanger placements, meaning that adjustments or custom brackets may be required.
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Flange Alignment: The flanges where the exhaust connects to the catalytic converter or mid-pipe might not align perfectly. This could cause exhaust leaks or require welding.
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System Length: The length of the catback system may vary between the two vehicles, which can affect the overall fitment, especially around the rear bumper area.
These differences can lead to potential issues during installation and may require additional tools or professional help.
Challenges When Installing a G37 Catback Exhaust on a 370Z
While a G37 catback exhaust can physically fit on a 370Z, it’s important to understand the challenges involved in the installation process.
Mounting and Support Issues
The G37 catback exhaust is not a direct drop-in replacement for the 370Z system. Although the general layout and shape of the two exhausts are similar, you’ll likely encounter issues with the exhaust hangers. The mounting points for these hangers may not align perfectly with the 370Z’s chassis, requiring either adjustment or the use of custom brackets.
Potential Adjustments
In many cases, users will find that the overall length of the G37 exhaust is slightly different from that of the 370Z exhaust. This could lead to an awkward fitment, especially in the rear section of the exhaust. The exhaust tips might also be positioned differently, meaning that they could hang too low or be misaligned with the rear bumper. These adjustments may require custom modifications, such as cutting or welding.
Is It Worth the Effort?
While installing a G37 catback exhaust on a 370Z is possible, it’s generally not the most straightforward solution. The need for modifications can increase both the cost and time of the installation. In many cases, opting for a catback exhaust specifically designed for the 370Z will result in a more seamless fit, avoiding the potential for these installation issues.
Legal and Emissions Considerations for Using a G37 Catback Exhaust on a 370Z
When modifying your exhaust system, it’s crucial to consider the legal implications, especially in regions with strict emissions laws like California.
CARB Certification for Exhaust Systems
In California and other states with similar regulations, any aftermarket exhaust system must be CARB (California Air Resources Board) certified to be street legal. The G37 catback exhaust may not come with CARB certification, which could make it illegal to use in these areas. This is a critical point to keep in mind, as using a non-compliant exhaust system could result in fines or difficulties passing emissions tests.
For car owners in states without stringent emissions regulations, this may not be an issue, but it's always important to double-check whether the exhaust system you're considering is CARB-approved.
Emissions Compliance
Installing an exhaust system that isn't emissions-compliant can result in significant issues. Not only could you fail to pass an emissions test, but your vehicle may also be subject to a fine or a penalty in certain states. The best approach is to either ensure the G37 exhaust is emissions-compliant or select a system specifically designed for the 370Z that adheres to local laws.
Legal Risks and Solutions
If you live in a state with strict emissions testing, it's highly advisable to either stick with a 370Z-specific exhaust system or ensure that the G37 exhaust has been properly tested and certified. Some aftermarket manufacturers do offer CARB-compliant systems, which are a safer and legal alternative.
Sound and Performance Differences Between G37 and 370Z Exhaust Systems
One of the main reasons car enthusiasts swap out their stock exhausts is to improve sound and performance. So, what happens when you install a G37 catback exhaust on a 370Z?
Exhaust Note and Sound Levels
The sound characteristics of the G37 catback exhaust may differ from that of the stock 370Z exhaust. The G37 system might produce a deeper, more aggressive tone, depending on the muffler design and pipe diameter. However, this sound might be louder or resonate differently, especially when paired with the 370Z engine. If you enjoy a sportier exhaust note, the G37 catback might be a good choice, but it’s important to ensure that the noise level isn’t too intrusive, particularly for daily driving.
Performance Gains or Losses
From a performance standpoint, the G37 catback exhaust might provide some minor gains in horsepower and torque. The larger diameter of the exhaust pipes can reduce exhaust backpressure, allowing the engine to breathe more freely. However, these gains are often minimal unless paired with other performance modifications like a high-flow catalytic converter or cold air intake.
For most drivers, the primary benefit of installing the G37 exhaust will be the sound rather than any significant performance boost. The impact on power will likely be marginal unless you plan to upgrade the entire exhaust system, including the headers and mid-pipes.
Is the G37 Catback Exhaust the Right Upgrade for Your 370Z?
When deciding whether to go with the G37 catback exhaust for your 370Z, there are a few factors to consider.
If your primary goal is a louder, more aggressive exhaust sound and you’re prepared for some installation challenges, the G37 catback may be a viable option. However, if you’re looking for a hassle-free installation with optimal performance, it’s often better to go with a system specifically designed for the 370Z.
For those who want a seamless fitment with less modification, Flashark’s catback exhaust, designed to fit both the 370Z and G37, could be the perfect solution. With this system, you eliminate the guesswork and modification headaches that come with using a G37 exhaust on a 370Z. By opting for a part that’s engineered to fit both models, you get a high-quality exhaust system that performs well and sounds great without the added hassle of custom adjustments.
While the G37 catback exhaust may offer some benefits in terms of sound and potential performance gains, the added cost of modifications and the potential legal issues make it a less ideal option. It might be more cost-effective and trouble-free to invest in an exhaust system designed specifically for the 370Z or one that fits both the 370Z and G37, like Flashark's catback exhaust. This option ensures an easy fit, optimal performance, and avoids any installation-related complications.
Conclusion
In conclusion, while the G37 catback exhaust can physically fit on a 370Z, it’s not the most straightforward or optimal choice. The differences in mounting points, length, and exhaust design can make installation challenging, and the lack of CARB certification could present legal issues, especially in states with strict emissions laws. Ultimately, for a hassle-free experience, it’s recommended to choose an exhaust system that’s specifically designed for the 370Z or one that fits both the 370Z and G37, such as Flashark’s dual-fitment catback exhaust. This will provide a seamless fit and a stress-free installation process.
