One of the biggest advantages of a Variable Geometry Turbo (VGT) isn’t just efficiency – it’s how it controls airflow at low engine speeds.
Because of this, VGT turbos can improve performance across a wider RPM range.
However, when that system stops working correctly, the engine feels completely different – and performance drops fast.
Continue reading VGT Turbo Advantages (What Makes Variable Geometry Turbos Better?)
A Variable Geometry Turbocharger (VGT) does more than create boost.
It actively controls airflow, exhaust energy, and turbo speed across different engine conditions.
When a VGT system starts to fail, the issue is not just loss of power – it affects:
Understanding how a VGT works – and how it fails – is key to diagnosing problems correctly.
Continue reading VGT Turbo Problems and Symptoms: How Variable Geometry Failures Affect Boost, Heat, and Engine Performance
Variable Geometry Turbochargers (VGTs) are designed to adjust airflow dynamically—but when they fail, one issue shows up more than any other:
Sticking vanes. If the vanes can’t move, the turbo can’t control boost properly.
And that leads to:
The challenge is this:
Not every VGT problem is actually a bad turbo.
Continue reading Why Diesel VGT Turbo Vanes Stick (And How to Tell If It’s the Turbo or the Actuator)You’ve probably seen the term VGT or variable geometry turbocharger thrown around a lot when talking about diesel engines. You’ve probably heard even more about the problems they cause and money they can cost operators. How it’s easier and cheaper just to delete the system.
Continue reading VGT Options for Your Cummins ISX Diesel Engine
