When it comes to heavy-duty trucks and diesel engines, enthusiasts are fond of the 5.9 Cummins diesel motor. It was in production from 1998 until 2007 and is still ranked as one of the best. While this engine has a lot to offer on its own, using the best tuner for 5.9 Cummins only makes it better. We will review the top choices, so you can find the 5.9 Cummins tuner that takes performance to new levels.


Preview

Model

Compatible Vehicles

Monitor Size & Display Type

Check Price

MADS Smarty POD Programmer

MADS Smarty POD

2003-2007 5.9 Cummins

Number display

Edge Products 84130 Insight Monitor

Edge Products 84130

1998-2007 5.9 Cummins

5” full-color, high-resolution swipe screen

MADS Smarty Jr. J-06 03-07 Dodge Ram Cummins...

MADS Smarty Jr.

J-06 03-07

2003-2007 5.9 Cummins

Number display

Smarty Tuners S-03 Dodge Ram Cummins 5.9L...

Smarty Tuners S-03

1998-2002 5.9 Cummins

Number display

Edge Products 85400 CTS2 Diesel Evolution...

Edge Products

85400 CTS2

2003-2007 5.9 Cummins

5” high-resolution swipe screen

MADS Smarty Touch Programmer S2G - Dodge...

MADS Smarty Touch

1998-2007 5.9 Cummins

4.3” high-resolution touch screen

Superchips 3845 Flashpaq F5 Tuner

Superchips 3845

Flashpaq F5

2003-2007 5.9 Cummins

2.8”

Dodge 5.9L Cummins Smarty Junior Tuner

Dodge 5.9L Cummins

Smarty Junior 

2003-2007 5.9 Cummins

Number display


How Diesel Tuners Work

The diesel engine comes from the factory with pre-set configurations in place, but that’s not the limit of what the motor can handle. Instead, using the best tuner for Cummins 5.9 L gives you access to the performance settings to make modifications without permanently altering the configuration. From small tweaks to massive improvements, you have complete control over the changes that occur.


Benefits of Tuners & Programmers For Dodge Ram Trucks

You can purchase the best tuner for 5.9 Cummins mileage if you want to save money at the fuel pump. In addition, the best tuner for 5.9 L Cummins will improve horsepower and torque for your towing and hauling applications. Some of the 5.9 Cummins tuners will also allow you to view real-time data, plus give you the ability to read and delete DTCs.


How To Choose The Right 5.9 Cummins Tuner

Compatibility

If you are looking for the best tuner for 2003 5.9 Cummins, you can’t purchase one meant to work on a 2008 6.7 Cummins instead. While some of the tuners are compatible with multiple engines, this isn’t something you want to assume. Instead, read through the compatibility specs to ensure the model works with your truck.

Ease of Set-Up & Use

For the most part, the tuners are going to plug into the Ram's OBDII port and offer simple setup instructions. If you prefer to use a chip, you will have to install that under the hood, in the engine bay instead. Read through the customer reviews to gauge how complicated setup and configuration is before you purchase the tuner.

Power Levels

If you want to make quick power adjustments, look for a tuner that has pre-configured settings. Many of the top brands make it simple to increase horsepower, torque, and fuel economy. There should also be a stock setting, which allows you to revert back to the factory settings at any time.

ECM Download Time Frame

Once you make a setting change, you want to know that it will take immediate effect without any lag time. Typically, you can understand how long this process takes by reading through customer reviews. The initial program change might take longer than subsequent setting adjustments, so be prepared to wait a little longer at first.

Storage

If you plan on making your own setting changes, you will want the storage to hold these customizations for later use. Normally, only the higher-end models will offer storage for your settings, but you should be able to find units offering between five and twenty storage spots, which is helpful when you want to make adjustments on the go.

Monitor Size

You can spend less money and get a smaller monitor with your Cummins tuner. Sometimes, these are difficult to see but are helpful if you prefer something compact. Otherwise, you might prefer a larger screen with additional features, such as a color display, touch screen capability, swipe screen, and more.

Versatility

Aside from altering the performance aspects of your Cummins engine, you can also use the best mpg tuner for 5.9 Cummins to view real-time data. This information allows you to see what's happening with the engine at all times. Plus, if you purchase a unit that will enable you to read and erase DTCs, you save more money over taking your truck to the mechanic every time a warning light is on.

Design & Style

While the look isn’t always the most important factor when choosing a tuner, you don’t want to overlook the effect. After all, having a tuner mounted on your dash that doesn’t look seamless to your cabin could be distracting. Evaluate your options to see if you can find a design and style that fits your look.


8 Best Tuners for 5.9 Cummins Reviewed

1. MADS Smarty POD

Product Specifications

Compatible Vehicles

2003-2007 5.9 Cummins

Monitor Size & Display Type

Number display

Storage (up to how many tune files)

0-99 preset levels

ECM Download Time

3.5-5 minutes

Warranty

1-year

This is hands-down the best Smarty tuner for 5.9 Cummins. It works on 2003-2007 Ram trucks and can offer a large number of performance gains, without a long installation time. In fact, with the right tune, you can quickly add 215 horsepower. Plus, this unit has Power on Demand, which allows you to change the power levels while you are moving.

This Smarty tuner for 5.9 Cummins also contains a speed limiter. This setting allows you to set the maximum speed of your truck, anywhere from 25 and 250 mph. Play with the settings for the ABS tire-height adjuster or use the unit to read and clear DTCs. Also, this tuner is not traceable. If you revert back to stock and disconnect the tuner, no one will know it was ever installed. 

Smarty claims that the ECM update time is the fastest in the industry, and users tend to agree. If you don't want to wait around for the updates, this might be the best option for you, but be prepared to pay for it. As with many of the 5.9 Cummins tuner options, you will also receive a one-year warranty with this model, which offers some additional peace of mind.

Pros

  • Fast ECM download time
  • Increases horsepower up to 215
  • Quick installation
  • Power on Demand

Cons

  • Expensive

2. Edge Products 84130

Product Specifications

Compatible Vehicles

1998-2007 5.9 Cummins

Monitor Size & Display Type

5” full-color, high-resolution swipe screen

Storage (up to how many tune files)

0

ECM Download Time

unknown

Warranty

1-year

While this Edge Products monitor isn't a tuner in itself, it will work in conjunction with other tuners for a comprehensive view of what's happening with your Cummins engine. It works with all 1998-2007 5.9 Cummins engines and comes with a sizeable five-inch full-color, high-resolution swipe screen. With this screen, you can view multiple gauges at once. Simply connect it into your OBDII port for a quick installation.

The best part is that you can customize the display with a variety of colors for the backgrounds, needles, and gauge arcs, giving you a perfect look for any truck cabin. Along with a tuner, you can also purchase additional accessories, such as an EGT pyrometer probe. This Edge Products monitor sends out alerts when the engine is in trouble, so you will never neglect the well-being of the motor again.

Overall, some people don’t want to spend this price for a monitor when it’s possible to get a tuner for the same cost, but the reviews suggest that it is worth the expense. In fact, it’s one of the top-rated monitors on the market. Plus, all customers receive a one-year warranty in conjunction with the purchase, but the manufacturer offers longer terms if you need it.

Pros

  • Large, easy to use screen
  • Highly rated
  • Fast installation
  • Customizable display

Cons

  • Requires a separate tuner

3. MADS Smarty Jr. J-06 03-07

Product Specifications

Compatible Vehicles

2003-2007 5.9 Cummins

Monitor Size & Display Type

Number display

Storage (up to how many tune files)

0

ECM Download Time

3.5-5 minutes

Warranty

1-year

The best tuner for 03 5.9 Cummins might just be this option from MADS. The Smarty Jr. tuner 5.9 Cummins works with 2003-2007 Ram trucks. Choose from three various power levels: 40, 70, and 100 horsepower. You can improve the drivability and fuel economy of your Ram truck with a few simple adjustments.

For the most part, ECM download time should be between 3.5 and 5 minutes, depending on the truck model. This is much faster than many other tuners. Use this device to adjust tire height, recalibrate the speedometer, or optimize the torque. Plus, this device will read and clear DTCs. As with other products from the company, there is no trace left behind. When you revert to stock settings and disconnect the device, no one can tell it was ever installed.

According to the Smarty Jr. tuner 5.9 Cummins reviews, you can also expect a quick installation time. You won’t need special tools or expertise to get started. Some people do wish that the display was slightly more comprehensive and advanced, especially considering the higher price tag. However, the company is a leader in the market and does offer a one-year warranty to give you additional security with the purchase.

Pros