(2017-2019 L5P) Duramax 6.6L PRO Performance Module
(2017-2019 L5P) Duramax 6.6L PRO Performance Module

3 Horsepower Settings Switch:
*30 HP - Heavy Tow
*60 HP - Mileage and Medium Tow
*90 HP - Mileage and Light Tow
(Max 150 ft/lbs Torque)

Price: $695.00
End of Summer Sale $545.00
You save $150.00!

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GM Duramax 6.6L L5P
PRO Performance Module


  • Fuel Savings:
    • Up to 15-20% improvement over stock
    • ='s 100 more miles tank fuel
  • Proven: Ten's of Thousands Satisfied Customers!
  • Drive-train Safe: Designed for Working-Class Trucks
  • E-Z to Install: Factory style connectors snap right into wire-harness
  • Warranty Friendly: Not-Detectable... leaves no fingerprint on ECM
  • Affordable: No need for additional expensive air intakes and exhaust mods


We here at Diesel Domination have been selling "original" Dr Performance diesel modules since 2003 and truly believe they are the absolute best product on the market for "Working-Class/ Daily Drivers".

The Pro Performance Module is the proven SAFE and WARRANTY FRIENDLY way to increase your diesel’s fuel economy and towing ability without the hype, hazards, and hidden costs associated with most diesel chips and delete kits.

Ten’s of thousands of hard-working diesel truck owners just like you are now experiencing incredible money saving fuel mileage gains and more towing power because they upgraded their trucks with the easy to install Pro Performance Module.

So effective is the Pro Performance Module at giving you both optimal fuel mileage and power gains, that it makes other diesel performance products nearly obsolete.

The Pro Performance Module was specifically developed for the diesel truck owner who is frustrated with their fuel mileage, but don’t want to void their warranty reprogramming the factory computer or installing expensive delete kits.

The price is affordable for most any budget and easy enough for anyone to install. If you are frustrated with less than optimal fuel mileage… you now have a solution!

If you are daily driving or going cross country, 100 EXTRA miles per tank of fuel adds up fast when it comes to money in your wallet. Stopping less to fuel up makes traveling more enjoyable and more affordable when you are saving $20 for every $100 in fuel. (up to 20% MPG increase)


You feel like your truck has plenty of power but the fact is Emission Standards have forced manufactures to de-tune your truck below 2000 RPM. This de-tuning has caused diesels to loose several mileage per gallon over the years.

To restore your truck's fuel mileage, you must change the "peak efficiency" of the motor to match your driving/towing RPM speed. Increase the low-end torque rise of your motor significantly improves fuel economy because the engine now does more work with less effort.

After increasing low-end torque many of our diesel customers tell us their trucks that were once getting 13-16 MPG and are now seeing up to 18-23 MPG.


The main difference between the Pro Performance Module and most electronic diesel performance products is the manipulation of fuel pressure vs fuel volume. Most chips/programmers change injector pulse width which adds for fuel to the engine... the Module changes fuel pressure which enhances the injector plume and increases the fuel atomization.

Excessive injector pulse width modification adds to much fuel volume and can cause the engine to run rich (smoke/heat)... whereas pressure/plume modification causes the engine to run more efficient due to improved fuel atomization. Pressure modification does add slightly more fuel under throttle but the additional combustion performance offsets any negatives.

The Number One reason customers install the Performance Module is for fuel savings but having up to an additional 90 horsepower (140 ft/lbs torque) makes for a more responsive truck when towing heavy loads. You can now get heavy loads moving faster and keep them moving faster on steep grades with less downshifting. (faster turbo spool gets you through intersections quicker)

The Pro Performance Module is an easy to install “plug and play” diesel performance product suitable for today’s hi-tech diesel engines. Engineered with advanced digital-microprocessor technology, the Module simply plugs into your factory wire-harness with OEM style plugs and helps manages your engine’s fuel delivery with precise electronic control of injection pressure.

Pro Performance Module gives you proven results with the “best of both worlds”. You get incredible money-saving benefits of better fuel economy and an amazing engine performance increase and at the same time! Instead of being frustrated with your diesel, simply upgrade it with a Pro Performance Module and get the fuel mileage increase, and first-class towing power gains you deserve.


You can't just wish for better mileage and do nothing... You must change your diesel's "peak efficiency" to increase your fuel mileage.

Add the Pro Performance Module to your Cart "Right Now" and start experiencing for yourself what thousands of hard working Powerstroke, Cummins and Duramax diesel owners are already enjoying.


. 4.5 of 5 Total Reviews: 12

2018 GMC 2500HD August 9, 2019
Reviewer: Travis Solomon from Stony Plain, AB Canada  
The module did not do what stated. My mileage actually went down, throttle response was not improved and I didn't notice any difference in power. My check engine light came on 7 days after installing the module, did not check to see what code was thrown.
Sent the module back and received a full refund but it took a month to get the refund.

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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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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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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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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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