Diablosport Predator Tuner – 2021 Reviews

| Last Updated: August 19, 2021

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From getting better mileage to achieving noticeable power gains, there are many benefits to installing a tuner in a diesel vehicle. The Diablosport Predator 2 is a tuner you can install to boost performance and customize different parameters, like tire size or shifting.

Here’s why Dodge, Ford, GM, and Chevy owners should consider this performing and accessible tuner.

  • The device will eliminate downshifting when getting to hills
  • Comes with an easy to read large display screen
  • Larger memory for improved tuning and updating speed
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What is the Diablosport Predator 2 Best Known For

The Diablosport Predator 2 makes tuning easy with its plug and play design. You can boost and customize your vehicle’s performance yourself thanks to the built-in programming. There are different modes to choose from, including economy, towing, daily driving, or extreme tuning.

It’s a reactive tuner equipped with a powerful processor. It offers a wide range of features that will help you add horsepower to your diesel vehicle, save on fuel, clear diagnostic codes, and customize things like tire size, gears, or shifting.

DiabloSport Predator 2

The tuner features a colorful 2.8” screen for easy access to the different parameters and programming modes. Five buttons provide an intuitive navigation experience. Diablosport delivers a tuner that doesn’t require any advanced programming or installation at an affordable price.

The Diablosport Predator 2 is a new and improved take on the Diablosport Predator tuner. This older model has been around for ten years and has become a staple of the tuning market.

The Predator 2 delivers more performance gains and emphasizes customization compared to the older model. You will also notice improvements in areas like data logging. This new product supports a wider range of vehicles, including newer models Dodge, Ford, GM, and Chevy.

DiabloSport Predator 2


  • Save Money on Fuel
  • Emission-Compliant Tuning
  • Get More Torque for Towing
  • Calibrate Different Parameters After Customizing Your Vehicle


  • Doesn’t accept custom tunes

Main Features

The DiabloSport Tuner 2 stands out thanks to the following features.

Performance Programs

The tuner comes with built-in performance programs. You can boost your diesel vehicle’s performance in a matter of minutes. There are no complicated adjustments required.

The built-in programs add horsepower or boost mileage. DiabloSport developed a selection of built-in programs fine-tuned to the different vehicles compatible with the device for optimal performance.


The DiabloSport Tuner 2 is a versatile device available at an affordable price. There are emission-compliant SKUs for 50 states, so you can use the tuner anywhere.

There are three variants of the tuner, including part numbers 7103-D, 7203-D, and 7303. These three-part numbers cover a wide range of vehicles:

Customize Your Vehicle

The tuner unlocks customization options via parameters that are easy to adjust.

If you want to install new wheels and tires on your truck or SUV, you can use the tuner to calibrate your vehicle and prevent any performance losses. The tuner will correct your speedometer if you change the size of your wheels or tires.

You can use the tuner to disable AFM or MDS. These features can be an issue while driving in hilly areas because they can result in downshifting. You can disable AFM or MDS if you would rather keep cylinders activated.


This DiabloSport tuner gives you access to valuable data about your vehicle. You can access diagnostic codes for your vehicle’s different modules and clear these codes if needed.

You can also collect data about your vehicle’s performance and review it to see how different tuning modes affect performance.


The simple design of the DiabloSport Predator 2 is one of its standout features. You can plug the device in via an OBD-II port and connect it to your computer via USB to download updates.

The 2.8” screen is ideal for adjusting parameters or reviewing data, and the five buttons make navigation easy. The tuner features a sleek and ergonomic handheld design that will have a small footprint inside of your vehicle.


DiabloSport tuners are a popular option among diesel truck and SUV owners. Here is why you should consider the DiabloSport Predator 2.

Save Money on Fuel

The built-in economy program of the Predator 2 can help you reduce diesel consumption and get an additional three miles per gallon. Consuming less diesel will also contribute to reducing your environmental footprint.

With diesel costing an average of $2.41 a gallon as of September 2020, fuel economies can add up quickly and justify investing in a tuner.

Get More Torque for Towing

The DiabloSport Predator 2 has a dedicated program for towing. This built-in program can enhance the towing performance of your truck or SUV by 250 to 350 lb-ft.

The tuner helps with towing by increasing the horsepower of your vehicle. The tuning mode optimizes your transmission for towing and reduces the wear-and-tear on your engine. If you use your vehicle for towing regularly, the Predator 2 will lessen the impact of the additional weight on your engine and other moving parts.

DiabloSport Predator 2

Calibrate Different Parameters After Customizing Your Vehicle

The DiabloSport Predator 2 allows you to fine-tune different parameters to achieve optimal performance.

Installing oversized wheels or different tires on your vehicle are popular modifications. The Predator 2 lets you calibrate your vehicle for these modifications. The tuner will also ensure that the speedometer readings remain accurate with the new wheels or tires.

Increasing the gear ratio of your vehicle often results in lower efficiency, even though you will see an improvement with acceleration. Inversely, adopting a lower gear ratio can improve speed and efficiency, but acceleration won’t be as performing.

The Predator 2 comes with different parameters you can adjust the lessen the drawbacks of adjusting your gear ratio. You will get more from your transmission, reduce wear-and-tear on moving parts, and avoid losing efficiency or acceleration once you modify your gear ratio.

Emission-Compliant Tuning

A major drawback of some tuners is that they increase emissions beyond legal limits. You can achieve better performance but might have to remove your tuner to pass an emission test.

You won’t run into this problem with the Predator 2. This tuner comes with emission-compliant SKUs for 50 states. There is no need to remove the tuner when passing an emission test, and you won’t have to worry about the tuner increasing your environmental footprint.


Unfortunately, the Predator 2 tuner doesn’t accept custom tunes. The tuner comes with pre-loaded programs and a wide range of parameters you can adjust, but you can’t load a customized configuration.

You will have to purchase the Platinum version of the tuner if you want to write your own code or have a dealer create a custom CRM code for you. The Platinum version comes with more pre-loaded programs, but it’s not emission-compliant everywhere.

What Do I Need to Know Before Buying a DiabloSport Predator Tuner?

The DiabloSport Predator 2 is one of the best tuners in its price range. The noticeable gains in horsepower, torque, and fuel efficiency make this tuner an excellent buy. It works with a wide range of diesel vehicles, and you will find that there are plenty of features and parameters you can tweak to match your lifestyle and driving.

The main drawback to consider is the lack of support for custom tunes. While you can plug the tuner into a computer to download updates, you won’t be able to install custom tunes.

If you want to perform a DPF/EGR delete the bypass the diesel particulate filter on your vehicle, you will need a tuner that supports custom CRM tunes. Keep in mind that you won’t be able to install a DPF/EGR delete tune with the Predator 2.

How to Install and Setup a DiabloSport Predator Tuner

Here are the steps to follow to get started with the Predator 2:

  1. Plug the device into the OBD-II port, typically underneath your steering wheel.

  2. Wait for the Predator 2 to power up.

  3. Use the up and down arrows to select tune options, scan options to see current diagnostic codes or info to access vehicle and tuner details.

  4. Once you select the tune options, the Predator 2 will prompt you to turn the ignition on.

  5.  You can select quick options to adjust the gear ratio, tire size, and other parameters. All you have to do is choose one of these options, adjust the parameters, and turn off the ignition.

  6. You can select tune options to see programs specific to your vehicle. Choose the economy, towing, or another tune, adjust parameters if needed, and confirm the installation before turning the ignition off.

  7. Whether you installed a new tune or adjusted the quick options, the Predator 2 will prompt you to turn your ignition back on once it applies the changes. The device will then clear any diagnostic codes.

You can see this process in this YouTube video: 


The DiabloSport Predator 2 delivers an unparalleled mix of value and performance. It’s difficult to find another tuner in the same price range that unlocks comparable performance improvements for the same range of diesel vehicles.

The lack of support for custom code and modifications like DPF/EGR delete can be a drawback, but the Predator 2 remains a tuner that is very easy to use, and that delivers noticeable performance improvements right away.

People Also Ask

Here are some additional things to consider about the Predator 2.

How Do You Unlock a Predator 2 Programmer?

When you connect a Predator 2 to a vehicle, the tuner will remain “married” to the vehicle. You will need to unlock or reset it if you want to use it with a different truck or SUV.

You will need to call a DiabloSport representative at 561-908-0040 ext. 5 to purchase a tool unlock.

How Much HP/TQ Does a Diablo Tuner Add?

You can expect to gain 100 to 150 HP depending on your vehicle. When it comes to torque, the tuner can add anywhere from 250 to 350 ft-lbs.

How Do I Update My DiabloSport Predator?

You can download the latest updates for your tuner by connecting it to a computer via USB. Visit the official DiabloSport website to find the latest drivers, download them, and follow the prompts to transfer them to the tuner.

Turn the tuner on and confirm that the latest update is present by selecting options and show the last tune written. If the status shows original backup or predator not married, you updated the device successfully.

Sean comes from the forums actually and drives an OBS Ford. He writes fantastic DIYs and knows his way around a camera, too. We keep him caffeinated and away from DPF filters to avoid another rant about recent emissions restrictions.