Infiniti G35 Test Pipes Guide

Need some G35 test pipes for your Infiniti? Compare price, fitment and performance in our ultimate G35 test pipes guide.

g35 test pipes

ISR Performance G35 Test Pipes
Berk G35 Test Pipes
Invidia G35 Test Pipes
AAM Competition G35 Test Pipes
Berk (07+) G35 Test Pipes
Motiv G35 Test Pipes
Kinetix G35 Test Pipes
Manzo G35 Test Pipes
Jump to winner

There’s no doubt that the Infiniti G35 has been a popular choice in both the drifting and stance scenes throughout the years. With the cars now reaching a more affordable price point than ever, owners are looking to squeeze some additional power out of their VQ35 DE and HR V6 engines.

Test pipes are undoubtedly a great early modification to make to your G-series to see instant gains of around 4-10RWHP from the increased airflow provided.

Combine your new test pipes with aftermarket headers and an aftermarket cold air intake to get the most from the bolt-on modifications.

We highly recommend checking your local state laws to ensure that your car is still capable of passing local emissions testing.

Check out this compilation video to give yourself an idea of what route you would like to go down.

*Warning* Orgasmic V6 noises!

Let’s take a look at our G35 test pipes

To read more about any of these products simply click on the test pipe name or photo. Click on the purchase link to be taken to a retailer to buy that item.

ISR Performance G35 Test Pipes

Manufacturer: ISR Performance
Fitment: Infinity G35 2003-2006
Value for money: ???

Our comment: Our first test pipes in the guide are from budget-friendly brand ISR Performance. These test pipes are made with high-quality stainless steel and come with bolts, gaskets and 02 sensor adapter extensions.

They are designed for the VQ35DE, so if you have a late model G35 you should be looking at ISR’s later G35/Z34/G37 test pipes.

The price is extremely attractive, the quality and fitment sound solid from owners reviews, however, expect some drone when at wide open throttle.

For such an affordable product, the ISR test pipes are worth a look.

Manufacturer description: “The ISR Performance test pipes are constructed using high quality stainless steel. These test pipes utilize stock flange locations so they can be used with stock components or aftermarket (Provided they aftermarket components use stock style flanges and mounting locations).“

“These test pipes will eliminate your catalytic converter, and are designed for off-road use only. Their straight through design will help add the maximum amount of horsepower and torque to your VQ, especially when paired with the ISR Y-pipe and exhaust!“

“These test pipes will ONLY work for VQ35DE motors, if you have a late model G35 with the VQ35HR you will need to purchase the Z34 style test pipes.“

BERK Technology G35 Test Pipes

Manufacturer: BERK Technology
Fitment: Infinity G35 2003-2006
Value for money: ????

Our comment: The BERK Technology test pipes are also aimed at a budget price point. They are made from 304 Stainless Steel and utilise a 60mm (2.36″) pipe diameter.

They do not make performance claims however they do note that their built-in CEL fix works 95% of the time. One neat feature is the inclusion of a 02 tapped hole with a bung on each pipe, this is designed to allow you to easily bolt on wideband 02 readers.

These are straight pipes and are not fitted with a resonator so expect a raspier exhaust note than before. For the money, the BERK test pipes make a good case for themselves.

Manufacturer description: “Dual 60mm Test Pipes w/ Built in O2 CEL fix. Additional O2 Bung Included on both pipes for left bank & right bank wideband O2 fuel tuning.“

“Full 304SS. Built-in CEL fix is ~95% effective in most cases. Your results may vary. OFF ROAD USE ONLY. Fits VQ35DE Motor: 2003-2007 G35 Coupe, 2003-2006 G35 Sedan“

Invidia G35 Test Pipes

Manufacturer: Invidia
Fitment: Infinity G35 2003-2006
Value for money: ???
Purchase link: Invidia G35 Test Pipes

Our comment: The Invidia test pipes come in at the high end of our budget. They are made with 304 Stainless Steel and have a beautiful finish. They are built with a 60mm pipe diameter and offer sturdy support brackets to reduce exhaust movement.

Feature-wise they lack some of the cool additions of the competition, but they are clearly a solid product. Perhaps a little strong with the price point.

Manufacturer description: “Installing the Invidia Test-Pipe is a great way to free up horsepower and increase the sound of your exhaust. By removing the stock catalytic converter you are allowing a greater volume of exhaust gases to pass through the exhaust system, thereby giving you better throttle response, increased power, and better gas mileage.“

AAM Competition G35 Test Pipes

Manufacturer: AAM Competition G35 Test Pipes
Fitment: Infinity G35 2003-2006
Value for money: ?????

Our comment: The AAM Competition test pipes are a mid price point product. The pipes are built with 304 Stainless Steel to an extra wide specification of 2.5″ in diameter.

As with most of the test pipes in this guide, they come with brand new bolts and gaskets. AAM claim a dyno proven 8-10 RWHP gain on a stock 2004 G35. In addition, fitting these test pipes will save you 11 pounds in weight over the OEM catalysts.

For the features, performance and price, the AAM Competition test pipes are hard to beat.

Manufacturer description: “AAM COMPETITION 2.5″ DE Test Pipes – Infiniti G35.“

Highest Flow Available
Dyno testing has shown 8-10 RWHP gains on a stock 2004 G35!
Precision TIG welded T-304 Stainless Steel
T304 stainless steel flanges
Saves 11 pounds

BERK Technology G35 Test Pipes for 2007+

Manufacturer: BERK Technology
Fitment: Infinity G35 2003-2006
Value for money: ????

Our comment: The second BERK Technology product featured in this guide, and the only test pipes suited to the later model G35 – these test pipes come in right at the top end of our budget.

They offer all of the features of the BERK test pipes mentioned above (304SS, gaskets & fitting hardware, 02 bungs for wideband) but also offers some pretty serious gusseted and plated support brackets to keep your exhaust system more stable and reduce flex on your headers. Very good to see.

If you are a 07+ G35 owner then these pipes are the perfect fit for you.

Manufacturer description: “Dual 60mm Test Pipes w/ Built-in O2 CEL fix. Additional O2 Bung Included on both pipes for left bank & right bank wideband O2 fuel tuning. Full 304SS. Built in CEL fix is ~95% effective in most cases. Your results may vary.“

Motiv Concepts G35 Test Pipes

Manufacturer: Motiv Concepts
Fitment: Infinity G35 2003-2006
Value for money: ???

Our comment: The Motiv Concepts test pipes are another high-end product, they are all handmade in the USA with a RathGibson tube of 2.5″ diameter.

These lovely looking pipes are finished with Motiv’s signature beautiful brushed finish and adorned with their name plaque. They look very cool indeed. The pipes are welded onto 3/8-inch thick stainless steel flanges and come with a lifetime warranty.

For the price, I would like to have found some dyno proven power claims, but you can expect similar performance to the AAM Competition units that also use 2.5″ diameter pipework.

If you want a high quality, no-thrills set of test pipes that come backed with a lifetime warranty, give Motiv a look.

Manufacturer description: “Our highly anticipated 2007-up test pipes are now available! Features fully gusseted and plated support brackets, the strongest in the industry.“

“Includes the same leak free soft crush graphite collector gaskets found in our 07- up HFC’s and secondary O2 sensor bungs for wideband tuning or AF monitoring. Plugs included when not in use.“

“Mechanical CEL fix included, but on the 07-up HR motors it is less effective than the 03-06 motors. Full 304 stainless steel construction, made the right way in the USA.“

Kinetix G35 Test Pipes

Manufacturer: Kinetix
Fitment: Infinity G35 2003-2006
Value for money: ????

Our comment: The Kinetix test pipes come in at the middle of our price range. These pipes use a 2.25″ diameter pipework and feature thick 3/4″ TIG welded flanges.

The diameter of these test pipes makes them an ideal pairing for Borla, Injen or Nismo exhaust systems. They also claim to not throw a CEL. Sounding pretty good so far?

Couple that with a 4-8 RWHP power increase and you could say these test pipes sell themselves. Feedback on G35 owner’s clubs also seems favourable towards the brand. A great choice.

Manufacturer description: “These pipes completely remove your factory catalytic converters and replaces them with a straight through design.“

“This provides the absolute most flow possible which has shown gains on NA G35’s between 4-8HP making it one of the best “bang for the buck” mods.“

“These pipes are an absolute must on FI cars which need all the flow possible. Constructed entirely of stainless steel and feature thick 3/8″ flanges.“

“They are completely TIG welded and also feature seamless mandrel bends. Tube diameter of 2.25″ matches up perfectly with aftermarket exhausts like Borla, Injen, and Nismo.“

“They retain the factory oxygen sensor mount and WILL NOT THROW A CHECK ENGINE LIGHT when run. These pipes will definately make your exhaust note more aggressive.“

“They have also tended to add a “raspy” exhaust note through the 3-4k range. This note has been loved by some, and hated by others, so it is not for the conservative.“

“They use all factory mounting points and there is no modification to the vehicle. These will work with either aftermarket headers, factory headers, aftermarket exhaust, or factory exhaust. **please note that these replace your factory converters with straight pipes which will not pass SMOG!“

Manzo G35 Test Pipes

Manufacturer: Manzo
Fitment: Infinity G35 2003-2006
Value for money: ????
Purchase link: Manzo G35 Test Pipes

Our comment: Manzo is well known for providing bargains to the aftermarket tuning scene, and their test pipes are no exception.

As you may have guessed, this often comes at a compromise regarding quality, but the design simplicity works in their favor.

Although many enthusiasts have been happy with their Manzo test pipes, several have mentioned that the supplied nuts and bolts aren’t to the highest standards.

However, given that these are cheap enough to source, it still makes the kit excellent value for money.

If you’re looking for a bargain for your budget drifter, these are well worth considering. However, for those seeking only the finest products for your G, you may wish to prioritize the premium alternatives.

Manufacturer description: “The most restrictive part of any exhaust system is the catalytic converter. The stock catalytic converter is meant to filter the flow of exhaust gases to reduce the amount of harmful gases into the atmosphere. Because of this, lots of potential performance is restrained.“

“Down Pipes eliminate the stock catalytic converter and reduce exhaust backpressure. By maximizing exhaust flow, this downpipe allows the turbo to spool up and build boost quicker. The result brings out the vehicle’s performance potential by giving it a free high flowing exhaust system.“

Our winner

The test pipes we feel offer you the best value for money are the AAM Competition pipes.

All of the test pipes in this guide are quality items, which makes it a little tricky in choosing a winner. With that said, the AAM Competition test pipes seem to offer great quality, fitment, performance and compatibility with reducing CELs.

Picking up any set of test pipes in this guide will make a great addition to your G-series exhaust system, but if it was my money I would be looking at the AAM Competition test pipes.

AAM Competition G35 Test Pipes

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If you are interested in upgrading your Infiniti’s test pipes, you should also take a look at our G35 y-pipes guide, our G35 exhaust guide and our G35 plenum spacer guide.

Photography credits

Drifted would like to extend thanks to the following sources for images.

Written by Joe Terrell Drifted.com founder, motoring journalist and all-round car enthusiast. Read more about Joe and the Drifted team on our about us page.