G37 test pipes are perfect if you want to increase the performance and sound of your Infiniti G37. It’s worth noting that the aftermarket exhaust components are likely to replace factory catalytic converters, which improves exhaust flow and maximizes horsepower output. G37 test pipes allow for increased throttle response and overall driving pleasure by removing restrictions in the exhaust system.
But, before you make the switch to become one, it’s good to be aware of their advantages, disadvantages and legal implications. In this ultimate guide, we’ll cover why you’d want to install G37 test pipes, how they enhance performance, and what you should consider before trying to get them installed. In the following, we will explore why G37 owners frequently choose test pipes as a performance modification, regardless of whether you are an experienced car addict or simply beginning your road to performance upgrades.
What Are G37 Test Pipes and How Do They Work?
The test pipes are straight-through exhaust components that replace the G37’s catalytic converters. Catalytic converters are primarily designed to eliminate emissions, but they also cause a restriction in exhaust flow. As these converters are eliminated with test pipes, the exhaust gases can exit more freely, reducing backpressure and improving engine efficiency.
The G37 test pipes are usually made from stainless steel or titanium which helps in giving them a long life and resistance against corrosion. Is available in a variety of designs, such as at come in resonated and non-resonated designs. Resonated test pipes are designed to reduce some noise and boost the overall smoothness of the exhaust, while non-resonated test pipes simply provide the most free-flowing design for the least amount of restriction. Properly configured, however, test pipes can greatly improve vehicle horsepower, torque, and driveability.
Performance Gains: How Test Pipes Improve Horsepower and Torque
Increased horsepower and torque are one of the primary reasons G37 owners run test pipes. Removing the restrictive catalytic converters allows the engine to breathe more easily, leading to better combustion and power production.
As per the dyno tests, G37 test pipes allow an increase of 8-15 horsepower, depending on the other modifications and tuning. For example, this increase shows up primarily at elevated RPMs, where the factory exhaust system can’t seem to push spent gases out of the cylinders fast enough. They also provide better exhaust scavenging, which improves throttle response and accelerates faster.
The difference is even more drastic when coupled with other performance upgrades such as a high-flow exhaust and an ECU tune. For many performance fans, test pipes are the first modification needed to unleash the full potential of their G37.
How G37 Test Pipes Enhance Exhaust Sound?
The sound of exhaust gases released through G37 test pipes is another big reason for car lovers to choose it. The stock catalytic converters muffle that delicious audible engine note, which dampens the G37’s V6 tone. Deletions of those limits cause the engine to develop a more aggressive, louder exhaust note.
Apr 28, 20201 thing’s for sure, with some test pipes in place, the 3.0T has a low rumble underneath, refreshing and pleasant, and when you wind it up it absolutely roars. The sound can range from refined to extreme, depending on the design of the test pipes (resonated vs. non-resonated).
There is one caveat worth noting test pipes can add rasp and this is especially true if you pair them with an aftermarket exhaust system. Back with resonated test pipes to help smooth out the harsher tones while keeping an aggressive exhaust note.
Installation Process and What to Expect
We do require some mechanical knowledge to install G37 test pipes, as you’ll need to remove the stock catalytic converters and replace them with new pipes. Below is a general breakdown of the installation process:
- Raise the Car – Use jack stands or a lift to elevate the vehicle for easier access.
- Unplug Sensors – Unplug both oxygen sensors for the stock catalytic converters.
- Remove Bolts and Brackets – The bolts holding the catalytic converters should be loosened and removed.
- Install the Test Pipes – Set the new test pipes, then bolt them down.
- Reconnect Sensors – If needed use O2 sensor spacers to avoid check engine lights.
- Leak Test – Start the car, and before you lower the thing, check for exhaust leaks.
Choosing the Best Test Pipes for Your G37
There are many options available when selecting G37 test pipes, and choosing the right ones depends on your performance goals, budget, and local regulations. Consider the following factors:
- Material – Stainless steel is durable and resistant to rust, while titanium is lightweight but more expensive.
- Resonated vs. Non-Resonated – Resonated test pipes reduce raspiness, while non-resonated pipes provide maximum performance.
- Brand Reputation – Trusted brands like ISR, Motordyne, and Fast Intentions offer high-quality test pipes.
- Compatibility – Ensure the test pipes are designed specifically for the G37 model to avoid fitment issues.
Investing in high-quality test pipes ensures durability, better sound quality, and optimal performance gains.
Maintenance and Potential Issues
G37 test pipes will need you to perform regular maintenance in order to ensure that the exhaust system is working properly. Here’s a look at some of the most common problems to watch out for:
- Check Engine Lights: A CEL is frequently thrown on after removing catalytic converters. ECU tuning or O2 sensor spacers will prevent this.
- Exhaust Leaks: Loose joints can create leaks, which kill performance and make annoying sounds.
- Loudness: Speaking of, certain setups can get excessively loud/raspy. Resonated test pipes will assist in eliminating some of the harsh sounds.
- Legal Compliance: Understand local laws so you don’t face fines or inspection failures.
If you can do this, you will have great performance and will increase the durability of your tailpipes as well.
Frequently Asked Questions
Do G37 test pipes increase horsepower?
Yes, test pipes can increase horsepower by 8-15 HP by improving exhaust flow and reducing back pressure.
Will installing test pipes make my car louder?
Yes, removing the catalytic converters results in a louder, more aggressive exhaust note, with varying levels of raspiness depending on the design.
Can I pass emissions tests with test pipes?
In most cases, no. Test pipes remove catalytic converters, which are required for emissions compliance in many areas.
Conclusion
If you’re a car enthusiast who enjoys upgrades, the test pipe is a great way to improve exhaust flow, horsepower, and tone. Still, before you make the switch, be sure to weigh emissions laws, installation challenges, and potential downsides. The right test Pipe should be made of high-quality materials and properly maintained to ensure a fun driving experience and exploit your G37 to the fullest.
