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towing or power limiting)
This device is designed for straightforward installation
Single Tune - Level 1 (Limited 4-Week Support Package)
The GDP Cat & DPF Race Pipes deliver stronger performance
7L Powerstroke truck owners (2020–2022)
GDP 3.5" Downpipe (2017-2023 Duramax L5P) c_fuel towing or power limiting)GDP 3. 5" Downpipe (2017 2023 Duramax L5P) Maximize Exhaust Flow. Lower EGTs. Improve Turbo Response. The GDP 3. 5" Downpipe, engineered for the 2017 2023 Duramax L5P, is built to reduce backpressure, improve turbo spool, and lower exhaust gas temperatures (EGTs). Designed for serious truck owners who need better airflow, stronger pulling power, and improved efficiency, this upgrade is the direct fit solution for increased durability and performance.
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