Best Turbo Upgrade for a 2011–2016 LML Duramax
If you're shopping for a turbo upgrade on a 2011–2016 LML Duramax, here's what to look for and why.
Quick answer: The TNT 63.5mm Drop-In Turbo is built specifically for the 2011–2016 LML, supporting up to 700WHP for towing-focused and higher-power street builds while keeping a straightforward, direct-fit installation.
Why upgrade the LML turbo
- More airflow headroom for towing under load.
- Lower EGTs at a given power level compared to a stock turbo running near its limit.
- Room to grow into more aggressive tuning and fueling down the road.
What makes this a strong platform to upgrade
The LML's stronger factory bottom end (relative to earlier Duramax generations) means the turbo is often the first real airflow bottleneck on a build, making it one of the highest-leverage upgrades for LML owners chasing more towing capability or power.
Installation
The TNT 63.5mm drop-in is designed to install in the factory turbo location without custom fabrication, keeping the upgrade approachable for a home garage or shop.
Pair it with the right supporting mods
See LML Duramax Supporting Mods for Towing & Power to get the most out of the upgrade.
Frequently asked questions
What's the best turbo upgrade for an LML Duramax?
The TNT 63.5mm Drop-In Turbo, built specifically for the 2011–2016 LML and rated up to 700WHP.
Is this a direct-fit installation?
Yes, it's designed to bolt into the factory turbo location.
Do I need tuning with this upgrade?
Custom tuning is strongly recommended to take advantage of the added airflow and to keep the combination reliable under load.