VQ35DE Resonated Catless Test Pipes

The Circuit Werks Resonated Catless Test Pipes are specifically engineered for the 2003-2006 Nissan 350z models equipped with the VQ35DE engine. These performance-oriented test pipes aim to enhance exhaust flow and provide additional gains over standard test pipes by removing the factory catalytic converter. Constructed with a 2.5-inch outer diameter and a 2.25-inch inner diameter, these test pipes incorporate built-in flex pipes designed to effectively absorb engine vibrations and movements, ensuring durability and a smooth installation. They are designed as a direct bolt-on replacement. Included with the test pipes are O2 sensor extenders. While they fit both automatic and manual transmissions, it's important to note that the provided O2 extensions may not be compatible with automatic transmission models. Installation instructions are not provided. Please be aware that this product replaces the factory catalytic converter and may not be legal for use in emissions-regulated states; it is intended for off-road use only.