Upgrading Diesel Performance – Need Some Guidance

[Nikkii]

Has anyone here done any serious mods to improve durability and power on a 2019 Duramax? I’m considering a full overhaul but not sure which components make the biggest difference without creating more headaches down the road. Any firsthand experience?

[ann5]

On the Duramax platform, a smart approach is to focus on systems that reduce restrictions and improve efficiency rather than just chasing horsepower. A good starting point is an l5p delete kit , which allows the engine to breathe more freely while improving reliability. Pair it with a solid tune, reinforced intercooler pipes, and upgraded filtration to handle higher demands. Just make sure all supporting systems are aligned – fuel delivery, cooling, and exhaust flow – to keep things running smoothly and avoid stress on internals.

[Maxx3]

What about long-term maintenance after performance upgrades? Curious if service intervals change or if certain parts wear faster when pushing the truck beyond stock settings.