Another way is to just purchase a high-flowing cat system, which increases the chances of passing emissions – the one thing that drift setup owners are concerned about. The principal function of a catalytic converter also referred to as a "cat" or "cat-con," is to transform dangerous exhaust pollutants into less-toxic gases before they are released into the atmosphere. A test pipe will also improve torque figures, and you’re going to see the RPM jump up faster when you press down on the gas. Coming back to power figures, a test pipe is capable of increasing power output by a maximum of 10 if the engine has gone through an ECU tune also. For turbo engines, however, a test pipe setup will increase power figures by at the dyno. If you own a 350z, check out these aftermarket g37 test pipes pipes for your car.

All TIG welding is performed with argon back purging for oxidation free welds on the inner and outer surfaces. Thank you for your feedback, we will inform the developers and continue to improve our product. Ahmed is an engineer with a major in materials science. He is a true motorhead at heart and loves writing, especially about engines and vehicular dynamics. We have a full guide on many performance test pipes for the G35.

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 350zs between 4-8HP making it one of the best "bang for the buck" mods. 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.

A "quality" exhaust system maximizes performance gains by design. Both Test Pipes and Downpipes, like the FLASHARK G37 Test Pipes and 370Z Downpipe, are designed to increase horsepower. By improving exhaust flow and reducing restrictions, they can add 10 to 20 horsepower on average, with noticeable gains during high-performance driving. Test Pipes are primarily used in place of catalytic converters and are designed to completely eliminate catalytic converters to reduce exhaust drag and increase power output, typically used in track and high performance applications. What an exhaust sounds like is typically the number one factor when choosing a system.

Since this is not the case, cats are the only way to go when designing exhaust systems. Your engine’s ability to produce additional power is entirely dependent on airflow. The intake and exhaust systems are therefore frequently modified first. This is mostly because turbos rely a lot on exhaust pressure, so it’s easy to see why improving the exhaust flow on a turbo engine responds much better to a test pipe configuration. Your turbo might end up making more boost, which can be both bad or good, depending on your engine internals, and other components.

The goal is to design a system that sounds great, without adversely affecting performance. Because of these reasons, Invidia front pipes and cat pipes make for the most popular exhaust upgrade that adds a substantial bump in both horsepower and torque. I am using these with my stock Nismo (test pipe/cat back) system. Gave the car some room to breath and still sounds stock ( no trumpets). I ordered my test pipes thinking they where gonna arrive in a couple months but I only waited 2 weeks! And the customer service is awesome and the best thing is the free shipping.