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Are you looking to unleash the full potential of your G35’s exhaust system? Consider upgrading to test pipes, which will not only enhance your car’s power and torque but also improve fuel economy. In this guide, we will explore the best test pipes available for G35 coupes and sedans, allowing you to make an informed decision and take your driving experience to the next level.
Down Pipe vs Test Pipe vs Straight Pipe
Before we dive into the recommendations, let’s clear up any confusion around the terminology. In turbocharged cars, a “down pipe” typically refers to a pipe that connects directly to the turbo. However, in the case of the non-turbocharged Infiniti G35, the term is still used by manufacturers. So, for the purposes of this guide, we can consider down pipes, test pipes, and straight pipes to all mean the same thing.
Construction and Types
Test pipes are straight-through pipes designed to replace your car’s catalytic converter. When choosing the right test pipes for your G35, consider factors such as inlet and outlet diameter, construction type (usually steel), and welding quality. While some products come with limited warranties, the durability of test pipes is generally high, so warranties shouldn’t be a major concern.
There are two main types of test pipes: resonated and non-resonated. Resonated test pipes are designed to reduce rasp and volume, resulting in a deeper tone. On the other hand, non-resonated test pipes tend to produce a hissing and raspier sound, but they are also louder.
Trade-Offs of Adding Test Pipes
It’s important to note that adding test pipes to your G35 may come with some trade-offs. Due to the similarities between the Nissan 350z and the Infiniti G35, some aftermarket manufacturers may not prioritize noise reduction. If you want to minimize drone and rasp, consider installing an X-pipe alongside the test pipes. Additionally, be mindful of any potential exhaust fumes or unpleasant odors that may occur if the piping inlet and outlet diameters don’t match your G35 properly.
Affordable Options
Now, let’s explore some of the best test pipes available for G35 coupes and sedans. These options provide excellent performance without breaking the bank.
Manzo
- Inlet: 2.5″
- Outlet: 2.5″
- Compatibility: 2003-2006 sedans, 2003-2007 coupes (VQ35DE engines)
- Material: Stainless Steel
Manzo offers reasonably priced test pipes that provide a noticeable performance boost. However, be aware that these pipes are not resonated. Additionally, some G35 owners have reported increased smoke at high RPM, particularly in older vehicles. It’s worth considering replacing the supplied bolts for better quality ones.
Gent5 Flex
- Inlet: 2.5″
- Outlet: 2.5″
- Compatibility: 2003-2006 sedans, 2003-2007 coupes (VQ35DE engines)
- Material: Stainless Steel
Gent5’s test pipes feature flex pipe sectioning, preventing cracking under heavy engine torque. They are easier to install and come with a one-year limited manufacturer warranty. These pipes are specifically designed for competition use, reducing hiss and rasp while delivering a smooth rumble. They offer great value for the price.
Auto Dynasty
- Inlet: 2.5″
- Outlet: 2.5″
- Compatibility: All Years (VQ35DE and VQ35HR engines)
- Material: T-304 Stainless Steel
Auto Dynasty’s “turbo” downpipes may have a confusing name, but they provide an affordable way to enhance exhaust flow. These downpipes are lighter than stock catalytic converters and can increase power output by up to 15 horsepower. They are non-resonated, meaning they may produce some rasp but without a “ricey” sound. The gaskets provided may require replacement, and longer bolts are recommended for easier installation.
Megan Racing
- Inlet: 2.5″
- Outlet: 2.5″
- Compatibility: 2003-2006 sedans, 2003-2007 coupes (VQ35DE engines)
- Material: T-304 Stainless Steel
Megan Racing’s straight pipes are considered some of the best test pipes for G35s. With strong welds to prevent cracking, these pipes offer excellent flow, resulting in increased performance and a slightly louder exhaust note. It’s important to note that these pipes sit quite low, but some G35 owners have found ways to address this issue.
AAM Competition
- Inlet: 2.5″
- Outlet: 2.5″
- Compatibility: 2003-2004 Coupes and Sedans
- Material: T304 Stainless Steel
AAM Competition’s mid-price test pipes deliver a great balance of features, price, and performance gains. These pipes have been dyno-tested to add 8-10 horsepower to a stock G35 coupe or sedan and are significantly lighter than OEM catalytic converters. However, they are only compatible with 2003 and 2004 G35 models.
High-Performance Choices
For those seeking top-of-the-line test pipes with superior performance and craftsmanship, here are the best options available for G35 coupes and sedans.
Invidia
- Inlet: 1.97″
- Outlet: 1.97″
- Compatibility: 2003-2006 sedans, 2003-2007 coupes (VQ35DE engines)
- Material: Polished Stainless Steel
Invidia’s test pipes strike a balance between high quality and budget-friendly pricing. With sturdy support brackets, these pipes reduce exhaust movement and eliminate creaking or rattling sounds. The smaller diameter (1.97″) pipes provide better flow, improving throttle response, power, and gas mileage.
Berk Technology
- Inlet: 2.36″
- Outlet: 2.36″
- Compatibility: 2003-2006 sedans, 2003-2007 coupes (VQ35DE engines)
- Material: 304SS Stainless Steel
Berk Technology’s test pipes come with a built-in O2 CEL fix and tapped holes for easy O2 sensor installation. These straight pipes deliver a raspier exhaust note compared to stock catalytic converters. They are well-regarded among G35 drivers and tuners due to their mid-level pricing and reliable performance.
Tomei Expreme-Ti
- Inlet: 2.36″
- Outlet: 2.76″
- Compatibility: All Years (VQ35DE and VQ35HR engines)
- Material: Full Titanium
Tomei’s titanium test pipes are a testament to durability and reliability. Constructed from high-quality titanium, these pipes are lightweight and offer significant weight savings over OEM catalytic converters. They fit both VQ engines and provide excellent power gains. The welds on the bends of these pipes are remarkable, making them a true work of art.
Motordyne ART
- Inlet: 2.25″
- Outlet: 2.5″
- Compatibility: All Years (VQ35DE and VQ35HR engines)
- Material: SUS304 Polished Stainless Steel
Motordyne’s ART pipes are renowned for their advanced resonance tuning, which significantly reduces rasp and noise. These pipes boost horsepower and torque across various RPM ranges, providing a substantial power gain. The clean welds and high-quality materials used in their construction make them a top choice for G35 drivers seeking the best performance without compromising on sound quality.
Your Top Options
Ultimately, the best test pipes for your G35 depend on your specific preferences and priorities. Considering factors such as performance, value, and price, here are our top recommendations:
- Best for Performance: Motordyne ART
- Affordable Option: Auto Dynasty
- Our Favorites: Megan Racing
These options offer a range of performance enhancements and deliver great value for the price. However, if you believe we missed an exceptional choice, feel free to share your thoughts in the comments section below.
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