Return to (2017-2020 L5P) Duramax 6.6L PRO Performance Module
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5 of 5 2019 2500 HD Duramax July 19, 2019
Reviewer: Marvin Sumrall from Oak Grove , LA United States  
I was totally amazed with the increase of fuel mileage. He power increased as well. I would and have recommended this product to my friends.

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5 of 5 2019 Silverado 2500 hd June 1, 2019
Reviewer: Alan Gibson from Nampa, ID United States  
Getting mid to upper 20s mpg empty.

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5 of 5 2018 Silverado 3500 HD Duramax 6.6L May 9, 2019
Reviewer: Tim Rogers from Festus , MO United States  
Love it is everything I was told it would be 15%fuel milage increase . Nice boost in power

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4 of 5 2017 duramaz March 29, 2019
Reviewer: wendell singleton from chatom, AL United States  
when the module is working right it is great but about once a week it will drop my milage down to 12 miles per gallon for about 20 or 25 mile this last time it did your people told me to unplug it for 15 minutes and reboot it and I did but only have about 200 miles on it now and it has performed like it should but if it cuts me back to 12 miles to gallon one more time you will be getting it back.

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5 of 5 2018 Chev HD 2500 March 13, 2019
Reviewer: William H Gahagan from Sarasota, FL United States  
Super easy install. I was averaging 9-10 mpg around town and jumped to 14-15.
Definitely runs less restricted!!
Would buy it again!

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5 of 5 2017 GMC Denali February 17, 2019
Reviewer: Terence Carroll from Stevensville , MD United States  
module works great, more power and better fuel economy. highly recommend !!

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5 of 5 2018 November 9, 2018
Reviewer: Robert Jorgensen from Valrico, FL United States  
2500HD

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5 of 5 November 1, 2018
Reviewer: Noel Wellborn from Johnstown, CO United States  


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5 of 5 2017 August 23, 2018
Reviewer: William Hammock from wilson, NC United States  
2500 Chevy

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5 of 5 2017 duramax July 20, 2018
Reviewer: Thomas Cook from Magnolia, TX United States  
to soon to tell, only been installed a week

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