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2017-2020 Duramax L5P PRO DIESEL Performance Module


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OUR Satisfaction Guarantee TO YOU:

  • Improved Fuel Mileage
  • Snappy Throttle Response
  • MORE Horsepower and Torqueto move loads
  • 100% Money-Back Satisfaction 
  • Warranty Friendly - No Fingerprint

Fits Chevy/GMC Duramax 6.6L L5P (2017-2020)
  • 2500HD & 3500

Horsepower Select Knob:

*30 HP - Heavy Tow
*60 HP - Best Mileage and Tow
*90 HP - Mileage and Light Tow


  • Simple Install: EZ Plug-n-Play technology that you can install "in minutes" by simply connecting to your engine's wire-harness with factory style connectors.
  • Fuel Mileage: 10-20% improvement (get up to 100 more miles per tank of fuel)
  • Power Increase: Safe/Smooth low to medium range power for daily driving and pulling loads (Max 100 ft/lbs Torque)
  • Throttle Response: No more turbo lag... quicker Get Up & Go
  • Engine Safe: Performance gains stay within Stock parameters
  • Transmission Safe: Engineered for working-class daily drivers
  • Proven: Installed in tens of thousands of diesels since 2003
  • No Additional Mods: No need to delete emissions or add additional mods
  • Warranty Friendly: Leaves no "fingerprint" in the factory computer

Don't be frustrated with your mileage... improve it!

Since 2003 we here at Diesel Domination Inc have focused solely on upgrading "Working-Class Daily Drivers". We truly believe the "original" Dr. Performance Pro Diesel Modules are the Safest, most Warranty Friendly diesel performance products on the market.

The Pro Performance Module is the proven SAFE and WARRANTY FRIENDLY way to increase your dieselu2019s fuel economy and towing ability without the hype, hazards, and hidden costs associated with most diesel chips and delete kits.

Tenu2019s 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 donu2019t 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 mileageu2026 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 manufacturers to de-tune your truck below 2000 RPM. This de-tuning has caused diesels to lose mileage 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 too 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 u201cplug and playu201d diesel performance product suitable for todayu2019s 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 engineu2019s fuel delivery with precise electronic control of injection pressure.

Pro Performance Module gives you proven results with the u201cbest of both worldsu201d. 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.


Customer Reviews
4.7 Based on 27 Reviews
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Filter Reviews:
John S.
United States United States
Super easy to install

Great product so far fuel mileage increased about 15%. Super easy to install. Thank you

Matt D.
United States United States
2020 AT4 2500

Overall it’s a plug and play unit that’s easy to install and easy to use. I could feel a difference right away on setting 2. The best average on the highway for a 50 mile range was 21.9 according to the onboard computer. Definitely worth the money without any other mods. Truck is brand new.

Pro Diesel Modules 2017-2020 Duramax L5P PRO DIESEL Performance Module Review
Duane S.
United States United States
Decent stealth tuner

Easy to install. Dash was claiming larger mpg gains that actual hand calculated. I'm seeing a 2-3mpg actual gain. Biggest improvement is the throttle response and low end. Noticeable gain there. I had considered other options like the edge pulsar but this one looks much easier to remove and reinstall for any dealer trips.

Mike J.
United States United States
2018 duramax

It works like it is advertised very easy to install highly recommend

Thomas L.
United States United States

Great. 30% improvement in fuel economy.

Barney C.
United States United States
Hey works great.

I have installed this unit and it has improved my fuel mileage from 17-18 to 20-22 on average. My turbo lag hasn’t improved a lot; however, I do has a more peppy throttle response at low end. I would recommend anyone wanting to improve mileage and low end response; While, Not effecting the warranty. Thank you for this product. Barney.

Pro Diesel Modules 2017-2020 Duramax L5P PRO DIESEL Performance Module Review
Jeffry A.
United States United States
This is the ticket!

Very good happy with the power for pulling the trailer. Lag is not an issue anymore.

Nick H.
United States United States

Easy to install. I'm getting up to 6 mpg more. Shifting is smoother. Way better take off! Would recommend to anyone.

James P.
United States United States
It works!

I had a problem getting one of the connectors lose but that is a GM issue. I am getting 18% increase in city driving. 16.5 mpg to 19.5 mpg!

Lloyd B.
United States United States
My Second Purchased

I have had grr success with both units. My first was in a 2016 and that preformed great getting a constant 20+ MPG on the highway with a ton of power. My second is in a 2019 and has already shown that it will do the same. Great product would recommend it to anyone! Thanks

Pro Diesel Modules 2017-2020 Duramax L5P PRO DIESEL Performance Module Review