The 3 Best AFM Disabler in 2020 [Expert Recommendation]

Last Updated on July 10, 2020 by Atiqul Islam


Many of you are already aware of the functionality of an AFM disabler. Essentially, it’s a simple little device that keeps the cylinders running at their full potential. 

In short, they are responsible for meddling with the active and dynamic fuel systems that may downgrade the cylinder’s performance at times. In addition, you are getting better exhaust sound output if you use the best AFM disabler. 

That was a quick refresher on AFM disabling devices. 

Now let’s talk about the choices for 2020. The options we have for you today should get the job done if you want the full V8 functionality at all times. 

Let’s get started.

Recommended Best AFM Disabler

1. Range Technology Active Fuel Management Disable Device

Overview and Construction

If you’re looking for an AFM disabler, then Range Technology may be your best bet. Although they do not boast to be the best in the world, the consistency of their AFM disablers is very rare to find. 

So, what’s so special about the Range Technology Active Fuel Management Disable Device?

In terms of the construction, there’re no surprises. It’s a solid device that doesn’t leave any trace of its operation. There’s no change in the factory ECU. 

In short, it’s pretty much a ‘plug-in-and-forget’ type of scenario. So, there’s no extra hassle you need to deal with. 

Performance Metrics 

After the disabling of the active fuel management system, you’ll see a noticeably decent surge in performance. 

The Range Technology AFM Disabler makes sure that your engine is running at its peak at all times. 

You will find the power delivery performance to be accurate across the board. In short, during off-road or in other similar scenarios, the torque you’ll get will be satisfactory. 


The Range Technology AFM Disabler gets through the diagnostic port and starts disabling the Active/Dynamic Fuel Management system. 

It’s a no-hassle process as we mentioned earlier. Also, it doesn’t make any unnecessary changes. So, you should have no complaints there. 

And that’s pretty much all there is to it. If you want the best possible performance, then you may want to check it out.

  • Tool-free installation.
  • Takes access through the diagnostic port in seconds.
  • No reprogramming of Factory ECU.
  • Consistent performance with increased levels.
  • High-level throttle response for long hours.
  • Disables 4-cylinder mode.
  • Keeps the vehicle at V8 mode consistently.
  • ‘Change-Engine’ light pops up occasionally.

2. Range Technology Plug & Play AFM/DFM Active Fuel Management Disabler

Overview and Construction 

The Range Technology Plug & Play AFM/DFM Active Fuel Management Disabler is similar to the previous AFM disabler we saw a while back. As a matter of fact, you can treat both AFM disablers pretty much the same way. 

We will be talking about the same set of features you’ll enjoy with our top product. Again, the performance difference is very minimal. 

As far as the build quality goes, there’s no noticeable difference. It features the same dimensions as it’s siblings. And you’re also getting the easy installation feature here. 

Overall, the performance will seem similar and on point. 

Performance Metrics 

The Range Technology Plug & Play AFM/DFM Active Fuel Management Disabler makes the performance upgrades you’ll need the same way as you’d expect. 

It disables the Active/Dynamic fuel management system to manage the cylinder drops in performance. This in return gives you an increase in torque performance. And it does so in a consistent manner. 

Overall, you’ll see a no-drop power delivery across the board. 


As far as the installation goes, it’s as easy as you want it to be. 

All you have to do is plug it into the OBD-II port. And that’s all there is to it. The AFM disabler will start working without making any changes to the original system.

All in all, we would recommend that you take a closer look at this product. You won’t have any regrets.

  • Easy ‘plug-and-forget’ installation.
  • Highly capable of running V6 or V8 vehicles at full capacity.
  • Full power delivery without any changes to the ECU.
  • Leaves no trace in your vehicle system.
  • Works with a wide variety of vehicles.
  • The pricing is on the high side.

3. SKU, Range, GM, AFM Disabler, Red

Overview and Construction 

Our final choice in this review of the best vehicle AFM disabler comes from the makers of Range Technology as well. 

You may be tired of seeing Range Technology products. But if you are putting your trust into use, then we can assure you that you are not making a mistake. 

The build quality is pretty much as is. There are no surprises. It’s the same level of convenience as you’d expect from a Range Technology Product. 

Performance Metrics 

The performance levels will be up to your expectations. There will be very little cylinder drop thanks to the disabling of the Active Fuel Management System. 

And that, in turn, will give you consistent torque across the board. 


The installation process is similar to the previous options we discussed with you earlier. All you have to do is get it into the OBD-II port and you’re in business. 

Also, there’s no change in the default factory settings. And even if you need to go back to things they were, you can just remove it. 

Overall, this AFM disabler does all the things you need to do. So, you should certainly check it out.

  • Keeps the engine capacity 100% at all times.
  • Simple ‘Plug & Play’ into the OBD-II Port.
  • No reprogramming or repurposing the factory ECU.
  • Unplug the AFM to return to original settings.
  • Compatible with a wide variety of vehicles.
  • Pricing is a major concern.

Closing Thoughts 

Although the best AFM disabler doesn’t come cheap, the long-term longevity should make the purchasing decision easier for any individual. 

As you’re someone who wants peak performance at all times, you shouldn’t have any problems with the options we have for you. 

But in case you want to go with something different, we would ask that you keep the pros of our products in check. Clearly, it will help you develop a baseline. 

Good luck.


Atiqul Islam

Welcome to my site. I have interest in auto. I deal with automotive products. I have years of experience in this field. I will share my knowledge of this site.

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