The Diesel Power Source Turbonator® VGT is the most advanced turbo upgrade available for the Cummins platform. Featuring a patented ball-bearing variable geometry design, it offers instant spool, superior torque, and unmatched reliability. Perfect for towing or racing, it’s a game-changing evolution in turbocharger technology.
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Built around a proprietary variable vane system and low-friction bearing center section, the Turbonator® adjusts effective turbine A/R in real time. That means earlier boost, cooler EGT under load, and a wider usable powerband for daily driving, mountain grades, or performance use. If you want one turbo that can feel quick in town and confident with a trailer, this is it.
A Variable Geometry Turbocharger (VGT) adapts to engine demand to improve response and control:
In short, a VGT gives you response, control, and drivability without sacrificing top-end airflow.
Variable vanes adjust exhaust energy to the turbine. At low rpm they close to raise velocity for quick spool. As load rises they open to maintain airflow with lower drive pressure. The ball-bearing center section reduces friction so the rotating group accelerates quickly and resists heat-related wear.
Turbonator® VGT upgrades are available for popular Cummins 5.9L (1988–2007) and 6.7L (2007.5–2024) applications. Check each product page for year-specific parts, actuator style, and mounting hardware requirements. Systems are designed to install with factory accessories and emissions equipment when used as directed.
Planning a full system? Explore Cummins Exhaust Manifolds, 3rd Gen Swap Kits, Add-A-Turbo Kits, and S400 Single Turbos.
A Turbonator® VGT upgrade improves a factory variable geometry turbo by optimizing vane control, airflow efficiency, and durability, often paired with a ball-bearing CHRA. Compared to a stock VGT, a Turbonator® delivers faster spool, broader torque, improved throttle response, and better control of exhaust gas temperatures across the RPM range. It is designed to increase usable power without sacrificing drivability.
A VGT turbo automatically adjusts vane position to match engine demand, providing quicker spool, a wider torque curve, and better control over boost and EGT. Fixed-geometry turbos are designed for a narrower operating range and often trade low-RPM response for top-end flow. For towing, street use, and broad power delivery, a VGT offers a significant advantage.
Yes. The Turbonator® VGT is well suited for towing and street-driven diesel trucks. Variable vane control allows the turbo to respond quickly at low RPM while maintaining stable boost and EGT on long grades. This makes it especially effective for heavy towing, stop-and-go driving, and trucks that need strong midrange torque rather than just peak horsepower.
Yes. Turbonator® VGT upgrades are designed to operate with factory emissions systems when installed as directed. The variable geometry design maintains proper exhaust flow and boost control for emissions-equipped diesel trucks. Always follow local and federal emissions regulations when modifying your vehicle.
