21500 - 2015-2016 6.6L Duramax LML

In stock


6.6L GM Duramax trucks (LML engines) 2015-2016 models



Up to 90 Horsepower Increase and 1-3MPG Fuel Savings 




Categories: Truck , General Motors , 6.6L Duramax , LML

The 21500 Performance Module fits 6.6L GM Duramax trucks (LML engines) 2015-2016 models. This diesel performance module is designed for fuel economy with up to 30% increase in hp and fuel savings up to 10%-20%. Adjustable with a four position switch you can adjust the power on the fly, Stock, +30 HP 60 HP, & +90 HP. The module doesn't flash the ECM, instead it receives the data from the ECM, optimizes the signal to the engine improving the fuel efficiency and power. So it does indeed promise to pay for itself in pretty short order. Plug-and-play connectivity means there’s no need to cut, splice or modify engine wiring.

Best of all, all of our modules come with a Lifetime Warranty.

Warning: Cancer and Reproductive Harm

Install Videos

2015 - 2016 Chevrolet / GMC 2500 6.6L Duramax
2015-2016 LML Duramax Dyno Run: Stock vs. High Mode

Install Instructions

Install instructions
More Information
Light Duty Truck Engines General Motors
Years 2015, 2016
Light Duty Truck Engines Duramax 6.6L LML
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