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Why Upgrade vs Replace?
Carbon build-up from Engine Gas Recirculation (EGR), poor lubrication or contamination, blocked or leaking pipes or driving habits (driven hard at high speeds) might require you to replace your stock turbo. But upgrading will increase the maximum horsepower attainable with custom tuning.
Larger Turbine Wheel, More Air, More Power
Our Stealth 64 and Stealth 67G2 Turbos draw more air mass into the cylinders, allowing more fuel to mix at the same ratio. More fuel combusting means more power produced. The bigger the turbine, the more power produced.
64 vs 67G2 - Is Bigger Better
The larger turbine produces even more airflow, but you trade off some low-speed spool-up for high-end performance. If you’re towing heavy or on inclines, the smaller turbo may be a better choice. If you’re looking for top-end horsepower, the 67G2 is for you.
Manages Exhaust Gass Temperatures (EGTs)
More cold airflow into your engine lowers exhaust temperatures, and this may increase the life of your engine.
Quicker "Spool up"
Less space between the turbine wheel and housing means less time for the wheel to start moving. Your truck will feel more responsive.
Wilder Torque in the Lower RPM Range
You’ll especially notice this when towing. I can’t really explain this despite my copious notes – need help
How Much Horsepower Will I Gain?
| YEAR/RPO | STEALTH 64 MAX HP | STEALTH 67 MAX HP |
| LB7 2001-2004 | 640 RWHP | 800 RWHP |
| LLY 2004.5-2005 | 650 RWHP | 800 RWHP |
| LBZ 2006-2007 | 650 RWHP | 800 RWHP |
| LMM 2007.5-2010 | 650 RWHP | 800 RWHP |
| LML 2011-2016 | 650 RWHP | 800 RWHP |
| L5P 2017-2019 | 650 RWHP | 800 RWHP |
| L5P 2020-2021 | 650 RWHP | 800 RWHP |
| Cummins 2003-2007 | 700 RWHP | 800 RWHP |
| Cummins 2007.5-2009 | 700 RWHP | N/A |
| Cummins 2010-2012 | 700 RWHP | N/A |
| Cummins 2013-2018 | 700 RWHP | N/A |
The Whistle! The Feeling!
Stealth Turbos produce that amazing whistle you’re looking for – just have a listen to how it will sound – this video allows you to hear the Stealth turbo starting with the LB7 and working up to the LML. Combined with our custom tuning, you’ll get more power and force pushing you back in the seat on acceleration.
Easy to Install
Drop-In turbo fits exactly where your stock turbo does with no special modifications. Easy installation means less cost.
Warranty / Reputation
Calibrated Power Systems, home of Duramaxtuner.com is the leader in custom turning and turbo upgrades. Our standard 1-year warranty and reputation stand for itself. Read more about our Stealth Turbo Warranty HERE.
Worth the Extra $$ over Stock Replacement
For all the reasons above, don’t just replace your stock turbo. Upgrade it! More peak power. Wide torque curve when combined with our custom tuning. More responsive. Manage EGTs. And the WHISTLE!
Have More Questions? We've Got Answers.
Call Us weekdays from 8am til 6pm. We’re happy to answer all your questions and explain how our turbo upgrades fit with tuning, including 50 state tuning.
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