The APR GTS K04.3 Turbocharger System converts your 991.2 911 3.0T to the larger factory GTS turbochargers and includes the APR Stage 3 ECU Upgrade making the conversion plug-and-play! Up-to 615 HP and 549 FT-LBS of torque is available with no other modifications. Adding upgraded intercoolers bumps power up to 648 HP. This is a substantial increase in power and torque. Expect up to an additional +263 HP and +266 FT-LBS over stock on the base engine, and +244 HP and +223 FT-LBS on the S engine! This conversion system, sometimes dubbed an x51 package by Porsche, includes all genuine parts. It includes two new and genuine Borg Warner K04.3 Turbochargers, new gaskets, and o-rings. Simply remove and replace the factory components with our new components. No other hardware upgrades are required as the 3.0T mostly shares the same components, except for the turbochargers, from the base model to the GTS model. This system works with your factory engine hardware, factory fueling, and factory emissions components. It even works with upgraded engine and exhaust components and picks up even more power with upgraded intercoolers! This is all made possible by the included world-class APR Stage 3 ECU Upgrade which is programmed to your factory ECU at no additional charge! Important note* While the hardware in this listing is compatible with your vehicle it is possible that the required tuning is not. To confirm ECU tuning is available for your car, your vehicle's ECU box code must be identified. If you own VAG COM, OBDeleven, Carista, or have access to factory VW/Audi diagnostic tooling, you can follow this guide to identify your ECU box code. You can also visit either New German Performance shop location and our staff will be happy to assist. The customer assumes all risk if this turbocharger purchased and installed without first confirming the required software is available. No returns are accepted for installed turbocharger kits. Features: Massive power and torque increase eclipsing GTS model power figures Direct, bolt-on turbocharger upgrade using genuine and OEM parts APR’s world-class Stage 3 ECU Upgrade included Compatible with all factory hardware, including all emissions and fueling Compatible with most bolt-on upgrades Up to 649 HP with additional cooling Genuine Borg Warner turbochargers Genuine Porsche gaskets and o-rings Backed by APR’s industry leading support Extensive network of professional installers Fitment/Applications: 2017-2019 Porsche 911 Carrera, Carrera 4 3.0T 2017-2019 Porsche 911 Carrera S, Carrera 4S 3.0T 3.0T 2017-2019 Porsche 911 Targa 4, Targa 4S 3.0T APR Stage 3 ECU Upgrade Details 911 Base and T modelsTo learn more about the included Stage 3 ECU Upgrade, including more power charts, features, and more, please visit our ECU upgrade page. 911 S modelsTo learn more about the included Stage 3 ECU Upgrade, including more power charts, features, and more, please visit our ECU upgrade page.