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Ships within 48 hours · Estimated delivery Jul 28 - Aug 2
If you have a PTO
This device is designed for straightforward installation
7L Powerstroke truck owners (2020–2022)
This tuning refines shift points
Modifies factory controller security
GDP 3.5" Downpipe (2017-2023 Duramax L5P) c_fuel If you have a PTOGDP 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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