42 reviews

2013.5-2018 Cummins 6.7L PRO DIESEL Performance Module w/DEF

Simply Easy Learning
Diesel Pro Modules

  • NOTE: The de-rated Ram Cummins 6.7L Cab & Chassis has its own specific Module. This Module does not work on the de-rated Cummins motor.

Fits Ram Cummins (2011-2018)
  • 2500 and 3500
  • Manual and Automatic Transmissions

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 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
4.0 Based on 42 Reviews
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Filter Reviews:
Ross C.
United States
Satiisfied customer

Product works as advertised excellent

Larry G.
United States United States
The module probably as slow as your shipping and refunds

An absolute bust

Mikell B.
United States United States
Didn’t work as stated

Allen Shepherd stated I would gain at least 3 miles more per gallon or at least 100 miles more per tank. None of this has happened. I averaged 12 miles per gallon and still do with their module. Called and sent text. No replies. Imagine that!

Jeanna R.
United States United States
Definitely Helps!!!

Came fast. Installed easy. Immediately saw a difference. 2016 Ram 2500. Hwy mileage went from 15 at beat to 19. Towing 5th wheel from 8-9 to 12-13.

bernal m.
United States United States
Pro Diesel Module- Cummins6.7 2017 Ram

Only took about 30 minutes to install and feel the difference that day. Wow!

Vince P.
United States United States
I like it

It's taken a little while but it's finally starting to take hold getting some better fuel economy

Peggy O.
United States United States

Easy installation works great no Truro lag better fuel mileage runs good

Ryan S.
United States United States

Definitely added some low end response. MPG only went up 1-1.5- was told it would be 3-4.5. Spoke with Allan, and he agreed to send me the other module as it would do better. Waiting for it now.

Tim A.
United States United States

The item itself, I never actually used, however I returned the item for a refund due to the sale of the truck. I sent the item back for a refund after calling and getting RMA number, waited a week after having verified they received the unit, emailed and called with a long delay in responding to email, never by by phone, was told it would be another 5-10 days before a refund would be issued. To sum it up from my perspective, the product may be good, I cannot attest to that, but the customer service is terrible.

Ricardo I.
United States United States
**** yea

Amazing, strong strong strong

Pro Diesel Modules 2013.5-2018 Cummins 6.7L PRO DIESEL Performance Module w/DEF Review