EZTuner for 2003-2010 Duramax LB7/LLY/LBZ/LMM
Duramax EZTuner Duramileage Programmer is the proven SAFE and PROVEN way to increase your 2003-2010 Duramax diesel’s fuel economy and towing ability without the hype, hazards, and hidden costs associated with most diesel chips. Fits LB7 LLY LBZ LMM

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List $539.95
Today's Price $477.00
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Description Extended Information

Duramileage EZTuner
fits 2003-2010 Duramax Diesel


  • 50ECON - Best for Towing SUPER HEAVY Loads
  • 60ECON - Best for Towing SUPER HEAVY Loads
  • 100POWER - Best for beating Dodges and Fords


  • *FUEL SAVINGS: Up to 5 MPG Increase ='s 100 more miles tank fuel
  • *PROVEN: Over 12,000 Customers with Custom Mileage Tunes!
  • *DRIVETRAIN SAFE: Designed for Working-Class Trucks
  • *SUPER E-Z TO INSTALL: Plug into Data Port and press a button
  • *AFFORDALBLE: No need for additional expensive air intakes and exhaust mods

*Please Note we do no advocate removal of emmisions related


You may feel like your Duramax has plenty of power but the fact is Emission Standards have forced de-tuning of the low-end power curve of your diesel. This de-tuning over the past 10 years has caused diesels to drop from 20-25 MPG down to NEW trucks averaging 14-16 MPG.

The only way to get back the loss in fuel mileage is to increase the low-end power curve of your diesel.


To restore mileage you must change the "peak efficiency" of the motor to match your driving/towing RPM speed. This added low-end torque rise 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 they were once getting 13-16 MPG and are now seeing up to 18-23 MPG. Plus they now get over 100 more miles out of every tank of fuel. Imagine how much our customers are saving in fuel costs when they get 100 more miles out of every tank of fuel!


Yes its true… there truly is proven SAFE way to increase your Duramax’s fuel economy and towing ability without the hype, hazards, and hidden costs associated with most diesel chips and delete kits.

The fact is, over 12,000 hard-working Duramax 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 EZTuner Custom Mileage Tunes .

So effective are the EZTuner mileage tunes at giving you both optimal fuel mileage and power gains, that it makes other performance products nearly obsolete with its 30 Day Satisfaction Guarantee.

The EZTuner was specifically developed for the Duramax 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)


The main difference between the EZTuner and most diesel performance products is the manipulation of injector fuel volume. Chips/programmers increase injector pulse width which adds for fuel to the engine to increase power... the EZTuner finely tunes the pulese width to bring the engine up to its peak efficincy and keep it there without over-fueling the engine.

Excessive injector pulse width modification adds to much fuel which cause the engines to run rich (smoke/heat)... whereas the EZTuner's finely tuned modifications causes the engine to run more efficient due to improved combustion. These fine tuned modification do add slightly more fuel under throttle but the additional combustion performance offsets any negatives.

The Number One reason customers install the EZTuner is for fuel savings, but having up to an additional 100 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 EZTuner is a diesel performance product suitable for today’s hi-tech diesel engines. You simply plug the EZTuner into the OBD2 data port and follow the screen promps. You mileage tunes are installed in just a few minutes.

EZTuner 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 EZTuner 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!

Act now and Order a EZTuner for your diesel!

I guarantee you that nowhere else will you find what EZTuner custom mileage tunes can do for you when it comes to both mileage and power improvements.

Add the EZTuner to your Cart "Right Now" and start experiencing for yourself what thousands of hard working Duramax diesel owners are already enjoying.

ORDER NOW… because our Special Discount inventory is Limited!

OR CALL TODAY 1-406-431-3681


Good Afternoon,

I purchased the DuraMileage tuner for my 05 LLY Duramax. After installing an after market tuner made by another brand and running it for approximately 165,000 miles and fighting multiple code issues and damaged sensors, I pulled off the tuner and went without for another 100,000 miles. During this time the truck went to the dealer for an injector harness issue, and of course they flashed the truck ECM with the latest software. After this repair the Duramax just did not get any mileage. It averaged 13-15 MPG, and the power was off quite a bit.

At this time I started looking for an alternative solution but did not want anymore devices that manipulated signals to the ECM. This is when I came across your product and noticed that you reprogrammed the ECM. This had me curious enough to purchase the product and the 30 day guarantee sealed the deal.

Well at the time of install the LLY had 297,000 miles on it and it had the AFE turbo inlet pipe and a KN filter. Currently I now have 308,000 miles on the LLY. It is driven daily around town and tows moderate loads occasionally.

I now get an average city MPG of 18.7 up from 14.7, and the power increase is very noticeable when taking off from the red lights. The highway mileage at 70 MPH is 25 MPG empty up from 18. Since I do not tow as much as I used to, I cannot tell you what the MPG towing would be, but I suspect it will be improved from the last time I checked.

Most importantly, my wife who keeps the books for the company has noticed through expenses that I do not by as much fuel as before. Bottom line within 3 months the fuel savings paid for your programmer.

Again, thanks for a quality product and delivering what you promised.

Ron & Steve

I would like to say thank you for a great tune (70Econ on EZTuner) on my 2006 Silverado ECM. It's been a while since i had it done but haven't had a chance to really check it out until just lately. I just finished a 1000 mile trip and was very happy with the results. I got in excess of five more miles to a gallon average on my trip, what a surprise. I had been getting four more miles per gallon around town so i was sure hiway miles would be better but it was great. The extra power was just a bonus.

Thanks allot Guys


Ray - California

. 5 of 5 Total Reviews: 5

Second truck with your product July 7, 2018
Reviewer: James from Texas  
This is the second truck I have used your programmer on and your product is the only one I recommend to people. I had to pick up my package at the post office so I checked my mileage on the way there then loaded the program and drove the same route and speed and instantly got 4 more miles per gallon. I did it that way so the weather and road conditions were all the same so I could see what would happen with your product. Great product thanks J.C. from Texas

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Great for towing July 7, 2018
Reviewer: Gary from Texas  
2008 Chev 3/4 Ton LMM, At factory setting = 18 mpg Empty. Did a 5500 mile trip with varying loads. Will try and break it down. Update module to 60. Did 1000 mile with no load. Got 19mpg . Did 900 miles pulling 14000 lbs with trailer and equipment and got 8mpg. Did 400 miles pulling empty 31 ft trailor (6500 lbs) and got 12 mpg. Updated module to 70. Did 1000 miles pulling same trailor and got 16.9 mpg. No empty driving since.

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2006 2500 HD crew cab July 7, 2018
Reviewer: ken yeck from montvale, NJ United States  
Steve,and the crew. I have had your product for a year now.After finally playing with this.on level 40 I notice,1-2 mpg? Now I. Was playing with it and went to the next level ,unit started to get better? Now after a trip with a snowmobile on back with 3 adults and luggage on level 4 ? 533 miles round trip 21.3 gallons ,do the math!!!!! Over 25 mpg,s !! Here is the kicker I was traveling 75 MPH on the new York thruway ,thank you for making me a believer in your product, KEEP UP the good work

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23 MPG! July 7, 2018
Reviewer: Ryan from SD  
Just wanted to let you know I am very pleased with the tuner. My truck is a 2007.5 chevy 3500 dually and I installed the 60 econ tune as per your instructions and noticed 1-2 mpg gains and it definitely ran better. I also followed your instructions and kept trying the others (40 econ, 70 and 80). I actually found out the best setting for my truck seemed to be the 70 hp setting. At this setting I am seeing 18mpg up to 23.8mpg empty and from 10mpg to 14mpg loaded with various loads. This is awesome considering I was getting 12mpg to 14mpg empty and 8mpg to 10mpg loaded. Not only are the mpg gains great and obviously with $4 diesel a big reason for the tuning, but the truck runs better, with more power and less shifting.

I loved the tuner so much that I had to tell my father about it and he is in contact with you now to get one for his 2006 chevy.

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Worth Every Penny!! July 7, 2018
Reviewer: Anonymous Person from Virginia  
I purchased my Eztuner the end of 2015 and have to tell you it works great.  80,000 miles on my truck now and it is still going strong.  My mileage has averaged as high as 26 MPG on the highway.  I even averaged 20 MPG while hauling 4000 lbs of construction materials.  This product has paid for itself many times over, worth every penny!!!
Larry - VA

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