AMS Performance VR30DDTT Street Lower Downpipes w/GESI Catalytic Converter 2023+ Nissan Z / 2017-2022 INFINITI Q60 / 2016-2024 INFINITI Q50

AMS Performance VR30DDTT Street Lower Downpipes w/GESI Catalytic Converter

The AMS Performance VR30DDTT Street Lower Downpipes are crafted for those who demand excellence in both performance and emissions compliance. Utilizing advanced engineering techniques, our SnailWorks© team employed 3D CAD software to design these downpipes with full 3″ mandrel-bent stainless steel tubing, ensuring superior exhaust flow and improved boost response and turbo spool up. The ultra high output GESI catalytic converters, compliant with EPA regulations and capable of supporting up to 850 HP each, provide a perfect blend of catalyst efficiency and removing exhaust back pressure within the system. Engineered for a flawless fit and long-lasting durability, these downpipes offer innovation and precision in every detail, making them an ideal upgrade for high performance enthusiasts.

EPA Compliant Ultra High Output GESI Catalytic Converters Rated to 850 HP Each
Full 3″ Mandrel Bent Stainless Steel Tubing for the Best Exhaust Flow
Precise CAD Designed Brackets for Unrivaled Fit and Secure Mounting
Included 2.5″ to 3.0″ Adapter Allows for Compatibility w/ Stock, 2.5″, or 3″ Exhausts
Subdued Exhaust Note Perfect for Taming Loud Cat-Back Exhausts
Includes all Gaskets Rated to Over 800 °C and all Necessary Hardware for Install

Ultra High Output GESI Catalytic Converters
The GESI G-Sport catalytic converters integrated into the AMS Performance VR30DDTT Street Lower Downpipes offer exceptional performance and reliability. These 304 series stainless steel constructed converters are EPA compliant — ensuring they meet stringent emissions standards while delivering superior exhaust flow. Featuring a 300 CPSI cell count and a G-Sport triangle cell design, they effectively reduce back pressure, maximizing performance. The Double-Lock technology securely locks the substrate in place, and the proprietary precious metal wash coat guarantees consistent emissions reduction. Designed to withstand temperatures up to 1500°F, these catalytic converters are ideal for forced induction applications, providing the perfect balance of durability and efficiency within the exhaust system.

“Our latest updates to our line of Advanced Series G-Sport Catalytic Converters expands our proven core technology to better support the growing high performance aftermarket. Our converter models target applications based on model year, vehicle horsepower and exhaust sizing. Our new Advanced Series is reinforced with our proven S-Wound Core and supports up to 850hp per converter.”