7 Best AFM Disablers Reviews

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Not only will disabling the AFM help improve the engine’s performance, but it will also save you money and time.

The high-volume oil pump design that most trucks already come with leads to using excess oil and the AFM will help disable this system.

Moreover, the exhaust sound of your car will also be improved, helping to filter away any annoying noise from before.

By avoiding any drop in the cylinders, your engine will be working at its fullest. They will also lower the rate at which the AFM components wear off.

Buying the best AFM disabler can be quite a challenge if you’re not knowledgeable enough in what makes a product the best one.

But don’t worry about that, as I have complied some of the highest quality and best-rated products for you here, with sufficient detail to help you out.

7 Top Rated Active Fuel Management (AFM) Disabler Comparisons

Range Technology Active Fuel Management Disable Device

Range Technology Active Fuel Management Disable Device

DiabloSport S1000 Sprint AFM Tuner

DiabloSport S1000 Sprint AFM Tuner

Hypertech 32501 Max Energy Power Programmer

Hypertech 32501 Max Energy Power Programmer

FOXWELL NT301 OBD2 Scanner

FOXWELL NT301 OBD2 Scanner

Brand New Superchips Flashpaq F5 In-Cab Tuner

Brand New Superchips Flashpaq F5 In-Cab Tuner

Range Technology RA005R GM Start

Range Technology RA005R GM Start

Jet 15008 Performance Programmer

Jet 15008 Performance Programmer


1. Range Technology Active Fuel Management Disable Device

Range Technology Active Fuel Management Disable Device
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11/10/2023 10:09 am GMT

The number one product on the list is this Range Technology Active Fuel Management Disable Device.

This brand has some of the top AFM disablers in the market, and this is one of them.

This will help get your vehicle into V8 mode, therefore helping get the best performance out of your vehicle’s engine.

If you have a GM active fuel management, installing this AFM disabler will help bring the four cylinders to a stop.

In addition, the installation process for this product is also pretty easy. You do not need any fancy tools for the installation, so you can do it yourself at home.

You will not need to spend money at a professional, and the process is quick and easy, saving you time as a lot of car parts take a long to install.

What you have to do to install this product is to connect this product to the diagnostic port. This will not affect the Engine Factory Control limit.

Therefore no reprogramming will be required, making everything pretty quick and easy, and you don’t have to worry about anything as well.

The power will also be significantly improved to its maximum level, 100% of what it can be.

In addition, the throttle response will also be improved. This will help deliver the power at a consistent rate throughout.

Furthermore, this product is great for you if you regularly carry very heavy loads on your vehicle, driving at very high speeds, in bad weather or if you ever have to tow a vehicle behind yours.

This will help your vehicle combat all those difficult situations due to the improved performance of your engine.

The fuel consumption level will also be improved, therefore helping you save the cost of fuel. 100% power is guaranteed. Therefore this is an amazing product to look out for.

Although this product mostly has positive feedback, there were some complaints about it eating up the battery. However, this needs to be confirmed as I am not sure of it.
  • Easy installation
  • 100% power guaranteed
  • Improved fuel consumption level
  • Eats up battery

With the guaranteed maximum power level, this product sits on top of the list, and it is so popular that I could not help but give it the top position, as customers are very satisfied with this disabler.

2. DiabloSport S1000 Sprint AFM Tuner

DiabloSport S1000 Sprint AFM Tuner

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11/10/2023 12:04 pm GMT

The next product is the DiabloSport S1000 Sprint AFM Tuner. This product is great to deal with the cylinder drop.

This is when the cylinders drop power at the most unexpected times, therefore having you run on less power when you need a lot more.

This product will prevent any of that from happening, helping give you a very stable engine performance.

In addition, this will also help make your truck a lot more responsive and quick.

This will make driving on the road a lot easier and safer, with your vehicle picking up commands almost instantly, much better than before.

These AFM disablers might cause your mfg to drop, but this is constant among all AFM disablers, and you can always unplug this before long trips to deal with this problem.

This is best for riding your vehicle much faster, as the power will be improved significantly. This will help your car to run much faster whenever you’d like.

The best part about this product is how well it deals with removing the annoying exhaust noise.

Usually, in GMs with factory AFM, the vehicle will drone very loudly with the engine using only four cylinders.

By adding, four more cylinders, the problem is very much fixed, and now you won’t have to deal with the annoying drone sound when riding your vehicle.

You can also buy this product with an on/off optional toggle. This will help you customize everything however you’d like.

However, to pass the emissions test, you will need to unplug this disabler. Moreover, the increase in fuel consumption isn’t very huge.
  • Deals with cylinder drop
  • Stable engine performance
  • Responsive and quick engine
  • Improved power
  • Removes annoying drone noise
  • You have to unplug the disabler to pass an emissions test
  • It doesn't increase fuel consumption that much

This product will help make the response much quicker, therefore helping you drive your car much easier.

3. Hypertech 32501 Max Energy Power Programmer

Hypertech 32501 Max Energy Power Programmer
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11/09/2023 03:09 pm GMT

The next product on the list is the Hypertech 32501 Max Energy Power Programmer.

This product has many features, which makes it much better than all the other products in the market.

This is a highly customizable disabler, helping make the product very user-friendly. The installation is extremely simple.

You don’t need any fancy tools or any assistance at all, and not even any time will be spent trying to get the AFM disabled.

All you have to do is simply plug the product in. you can use it to change the shifting points in your vehicle. This will help make the automatic transmission much better.

In addition, the fuel economy is also greatly improved with this disabler.

This will help you go longer distances and also save the cost of fuel in the long run, as the engine is working with full efficiency, without wasting any fuel.

The speedometer calibration is also perfect. This will help with gear ratio changes for most applications. This is a speedometer calibrator for the non-stock tires.

The features will differ according to the vehicle application.

The common adjustments are RPM, Top speed limiter, Rev limiter, Fuel Management systems, throttle restrictions as well as a cooling fan on/off temperatures.

This helps get the best setting according to the type of engine. You can also use the return to stock feature to remove the AFM disabling if you wish so or if you want to resell your vehicle.

You will get a lift for your vehicle as well as for the tires. This will also help to improve the gas mileage as well as the horsepower, helping run the car much faster and better.

However, this disabler is incompatible with some vehicles, so before purchasing it for your car, always remember to check the compatibility with your vehicle, model, and type.
  • Highly customizable
  • Easy and simple installation
  • Fuel efficiency
  • Return to stock feature helps go back to previous performance
  • Improves horsepower
  • Incompatible with certain vehicles

If this product is compatible with your vehicle, then you will love how customizable it is, helping you get the kind of performance you desire.

4. FOXWELL NT301 OBD2 Scanner

FOXWELL NT301 OBD2 Scanner
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11/09/2023 02:13 pm GMT

Next is the FOXWELL NT301 OBD2 Scanner. This product is a professional mechanical tool that checks the engine light.

This product is great because this does not have compatibility with just a few vehicles.

Instead, it will work with a huge number of different vehicles, wherever you plugin into, and the compatibility will be great.

This can be used with many different SUVs, trucks, cars, light trucks, 12V, etc. all you have to do plug this into the OBD2 port, and you’re good to go.

The fuel efficiency will be improved significantly after installing this product. This will help save a lot of money in the long run.

Moreover, this product is also very user-friendly, which is great for a professional disabler.

It is very simple and easy to use, and you will not face any difficulties trying to figure out how to work this thing, which is a concern many customers face with such car devices.

A 2.8-inch screen makes everything clearly visible. The buttons are also softer to use and are nine in total.

This will help you control the product pretty easily and help improve performance.

You will also be able to read the graphs because of how simply this displays them. With attractive LED signals in yellow, green, and red, there will be indications of many things.

This disabler also has a speaker, another feature for your convenience. This will tell you whenever the device is ready.

The read-to-read feature will help you understand everything pretty easily.

Even though it is very user-friendly, I have to mention that it is a professional product, so it might be a bit complex for some users to understand.
  • Very good compatibility
  • Fuel efficiency is improved
  • User friendly
  • Attractive LED signals
  • Built-in speaker
  • A bit complex to operate

With all the features for your convenience, this product should be pretty convenient for even beginners while giving a professional-level performance.

5. Brand New Superchips Flashpaq F5 In-Cab Tuner

Brand New Superchips Flashpaq F5 In-Cab Tuner
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11/09/2023 04:03 pm GMT

Another product with amazing performance results, here I have the Brand New Superchips Flashpaq F5 In-Cab Tuner.

The feedback from previous customers has been mostly positive, with most of them agreeing on the amazing results. This will help the truck engine become more stable.

In addition, the throttle response will be improved. This will help the entire vehicle to run pretty smoothly, with the performance at its maximum level.

You can now get much more performance out of your vehicle in different situations. This disabler comes with a screen; this makes it unique among many others.

The screen helps you to read everything you need to know to have the product working as you want it to.

Moreover, the installation is not hard as well. It can easily be done at home, and you don’t have to spend a lot of money by going to a professional.

The instructions are provided by the manufacturer and should be easy to understand and then follow, and the installation will not take very long.

You will not need to update the product after using it for the first time. Also, you have to connect it properly to the ignition.

After this, the screen will display all of the instructions which you just have to follow, so using this product should not be hard at all.

This will help take care of all of your truck’s key components and make sure these are working properly.

You can easily get speedometer calibration with this. Even the fuel consumption is improved, helping you save money.

There is an improvement in transmission timing as well as the gas mileage, which is most significant if your truck has bigger tires.

However, in the event of any issues, the customer support is not very good, so you might have to face problems yourself in case they do arise.
  • The truck engine becomes more stable
  • Has screen
  • Easy installation
  • Speedometer calibration
  • Improves transmission timing, gas mileage, fuel consumption
  • Customer support isn’t very good

This product is pretty easy to operate, and the improvements in performance also make this a great value for money.

6. Range Technology RA005R GM Start

Range Technology RA005R GM Start

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11/10/2023 08:13 pm GMT

Next is the Range Technology RA005R GM Start. The range has some of the best disablers on the list, and this is another one of them.

This product is high quality, solid, not flimsy, and it will not stop working after some time, like many other electronic devices.

This is a product which will last you pretty long, saving you money as you won’t have to be purchasing another one after a short time.

In addition, this will also stop and override the automatic stop, which will start the function in your vehicle.

The ASM will also be disabled. This disabler will also help to improve the truck’s reaction time significantly.

Therefore you can smoothly ride your vehicle wherever you go without any hesitation at all, as the performance is improved.

Moreover, this product is also much less risky than all the others in the market. This will not mess up the factory ECU settings, so you don’t have to worry about that.

When start/stop disabled, this product will not cause a lot of stress on the starting system.

This will help the product avoid any damage in the future, saving you any repair costs later. Therefore, this is a great product in terms of emergencies.

In addition, you just need to plug in the product to get it installed and won’t be having to blow money on an expensive mechanic to get the thing installed.

However, if you buy a used model, then you might find some faults in it. Therefore, it is much better to buy a brand new one.
  • It will last you really long
  • Improves reaction time
  • It doesn't mess up factory ECU settings
  • Plug-in quick installation
  • Used products might be a bit faulty

If you want a long-lasting product to improve the reaction times of your vehicle, then this is definitely the one.

7. Jet 15008 Performance Programmer

Jet 15008 Performance Programmer
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11/09/2023 06:39 am GMT

Finally, the last product on this list is the Jet 15008 Performance Programmer. This product will help to reprogram everything as you wish, and everything will be under your control.

This will allow you to get the performance exactly according to your driving style, which is actually great. Three different tuning modes are included.

These will help improve the fuel efficiency to the maximum level. With the fuel efficiency improved, a lot of fuel costs will be saved in the long term.

Moreover, it also allows you to stop the ABS system’s trouble light if it is ever on. This will help you with changing gear ratios and tire size.

This product will also help to correct your speedometer. The ignition timing can also be read and modified.

Moreover, you can change the air and fuel ratios, the shift point, rev limiter, speed limiter, as well as some other things.

A built-in trouble code scanner will help detect any problems in your engine while also finding a solution to get rid of them.

The user-friendly installation software makes it much easier to install, and you won’t need any help.

You just need to plug the device in and then answer yes and no questions to make changes just as you wish.

It is important to check whether it is compatible with your vehicle before buying it.

Finally, for the drawbacks, it was reported that the device does not have any management setting for the torque.

Make sure to check the management setting before going for it.

  • Can reprogram just as you wish
  • Improves fuel efficiency
  • Corrects speedometer
  • Built-in trouble code scanner
  • User-friendly installation
  • No torque management setting

With a user-friendly installation and the ability to improve the engine performance according to your driving, this product is great for regular users who want to improve engine performance.

What To Look For When Buying An AFM Disabler

If you want to improve your engine’s performance, then an AFM disabler might be your best bet.

But before you purchase one, confirm all the things that are mentioned in this buying guide.

Ensure Compatibility

When looking for an AFM disabler, you’ll want to ensure that it’s compatible with your vehicle.

AFM disablers are available in various models, so you’ll have a lot of choices when it comes to finding one that fits your car.

Some manufacturers offer universal products that can be used on most vehicles, while others offer products specifically designed for certain cars.

If you’re not sure which type of product will work best for your car, check with the manufacturer before making a purchase.

Should Be Easy To Operate

When shopping for an AFM disabler, you want something easy to operate. You don’t want to spend time figuring out how to use it or where the proper controls are.

It should be intuitive and straightforward so that even a first-time user can get started quickly and easily.

If that is not the case and you try to do random stuff, you might end up damaging the ECU’s programming or making the engine’s performance worse.

Should Not Be Too Heavy On The Battery

Make sure the AFM disabler doesn’t weigh down your vehicle’s battery. The best way to do this is by checking user ratings.

If a lot of people say that the product doesn’t put too much strain on their car batteries, then it’s likely that yours will be just fine as well.

Choose A Manufacturer With Decent Customer Support

When you are in the market for an AFM disabler, you will want to choose a manufacturer with decent customer support.

This is because you will need to be able to contact them directly to know how to operate or fix glitches.

The good thing about choosing a company with good customer service is that they can help you with any problems that may arise while using their product.

Frequently Asked Questions

Q1. What Does An AFM Disabler Do?

AFM Disabler is a device that, when plugged into the OBDII port (underneath the steering wheel), disables active fuel management for as long as it is connected.

This makes the engine overlook fuel efficiency altogether, improving performance by producing more power and torque.

The AFM disabler does not reprogram the ECU (engine control unit), so all changes are reversible and will work on any vehicle that supports active fuel management.

Q2. What Is The Difference Between A Tuner And An AFM Disabler?

The AFM disabler will help your vehicles to get into full cylinder mode and run in it. This will prevent the fuel systems from dropping any cylinders.

Tuners are like AFM disabler kits; however, these are a permanent solution. By using a tuner, you will be able to permanently disable Active Fuel Management.

In addition, tuners will help you disable all the fault codes, which might put your vehicle in danger.

Because of this reason, AFM disablers are a much safer option to use than tuners, which will help to get the maximum power out of your engine.

Q3. Will The AFM Disabler Affect Fuel Consumption?

AFM disablers will affect fuel consumption, but this doesn’t have to be negative.

Usually, after installing AFM disablers, the changes in fuel consumption are very unpredictable, so one cannot say if the difference will be negative or positive or to what extent in your case.

It will depend on the driving style of your car when you are getting the maximum power out of your car. Fuel consumption will be affected by driving conditions.

Usually, the mileage will get worse in the colder seasons because the fuel formulation will change in order to cope with the engine starting in the cold.

Q4. Why Should I Disable AFM?

It is better to disable the AFM. This is because most vehicles come with limited power from the factory.

This makes the vehicle efficient as well as safe. By disabling the AFM, the hidden power of your vehicle will be revealed.

Also, changing o V8 from V4 could also be due to the unpleasant sound that the V4 creates.

Also, there will be changes in the oil efficiency level as well as the fuel consumption after disabling the AFM.

Moreover, the pumping losses will be reduced. Overall, the performance will be improving significantly, which is why many people prefer disabling the AFM.

Q5. Will Disabling The AFM Be Permanent?

AFM disablers will not disable it permanently. Therefore, you can always remove the disabler whenever you wish. This will help the engine go back to using Active Fuel Management.

The benefit to this is that you’ll be able to decide if you want full power or you want to use the engine as it usually works.

This will help you switch whenever you wish, which is great as other options such as tuning do not allow this.

Q6. Is Disabling AFM Worth It?

Yes, disabling AFM is worth it. The only downside of disabling AFM is that it will take a toll on the battery, but other than that, it has nothing but pros.

You will get better performance out of your engine than ever before. Yes, there will be a fuel efficiency hit, but the trade-off will be worth it.

Your engine will always run in full-cylinder mode instead of switching between them. The main upside is that you can reverse all the changes by disconnecting it!


What is an AFM disabler? Let's find out what it is and get the most trusted one

Buying the best AFM disabler will help to regulate the performance of the engine overall.

Buying a product from one of the top brands will help.

All of the products mentioned on the list are high quality, have amazing performance while also being pleasant to look at as well as affordable.

Remember that the effects of an AFM disabler are not permanent and that you can go back whenever you wish.

This can be done by turning the ignition off and then disconnecting the disabler.

Keeping all the important features, popularity, and performance in mind, I am confident in saying that the Range Technology Active Fuel Management Disable Device is the most reliable product on the list, and I would highly recommend getting this one to disable the AFM in our vehicle.