Tech
-
Emissions rules for modified diesels differ between Canada and the US, and that affects what counts as a street-legal turbo upgrade. Quick answer: A drop-in turbo upgrade that retains all factory emissions equipment (DPF, DEF/SCR system, EGR) is generally the...
-
Vane sticking is one of the most common L5P/L5D turbo complaints — and one of the more preventable ones. Quick answer: Regular highway driving under load, timely oil changes, and avoiding excessive idle time are the biggest factors in keeping...
-
A turbo upgrade is only one part of a well-rounded L5P/L5D build. Here's what typically needs attention alongside it. Quick answer: Custom tuning, a capable lift pump, a free-flowing intake and exhaust, and EGT monitoring are the supporting mods that...
-
Not every L5P/L5D owner wants to swap the whole turbo. Rebuilding the factory unit with a billet compressor wheel is a common middle-ground option. Quick answer: A billet compressor wheel rebuild replaces the factory cast wheel with a stronger, more...
-
Before adding fuel or tuning, it helps to know roughly where the factory L5P/L5D turbo runs out of airflow. Quick answer: The factory L5P/L5D VGT is matched to the truck's stock output (roughly 445 hp / 910 lb-ft) and has...
-
Like any VGT, the L5P/L5D factory turbo can develop vane and actuator issues over time. Here's what to watch for and what typically causes it. Quick answer: The two most common L5P/L5D turbo issues are vane sticking from carbon/soot buildup...
-
The factory L5P/L5D turbo is a Garrett-sourced variable-geometry turbocharger (VGT) fitted to the 2017–2023 6.6L Duramax. If someone mentions the "VGT" on a newer Duramax tow rig, this is the turbo they mean. Quick answer: The L5P/L5D factory turbo is...