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Range Technology

Southwest Speed New Range Technology AFM-DFM DISABLER,Blue,Compatible with V6 & V8 GM Motors

    • Based on 3,563 reviews
Condition: New
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$201.80 Why this price?
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Features

  • Brand New Range Technology AFM/DFM Disabler, Blue, Compatible with V6 & V8 GM Motors, Produced by Holley Performance Products (Part #RA003B)
  • The Range AFM/DFM Disabler allows your V6 or V8 GM vehicle to run in full cylinder mode at all times, preventing the Active or Dynamic Fuel Management system from dropping cylinders. Our patented technology is the only product that will disable Active or Dynamic Fuel Management without reprogramming the factory ECU. Full power delivery all the time without factory warranty concerns.
  • Features: Range AFM/DFM Disabler keeps you in full power 100% of the time | Simply plug into your onboard OBD-II port and it instantly begins working to eliminate the AFM system | The power & control you need in any situation | The Range AFM/DFM Disabler does not reprogram your factory ECU | Leaves no trace - Unplug it to return to factory settings | Fits V6 & V8 General Motors (GM) active or dynamic fuel management vehicles, includes cars, trucks & SUVs | This device does not currently support
  • Specs: Brand: Range Technology | Color: Blue | Emission Code: 7 | Product Type: Tuner

Description

Brand New Range Technology AFM/DFM Disabler, Blue, Compatible with V6 & V8 GM Motors, Produced by Holley Performance Products (Part RA003B) The Range AFM/DFM Disabler allows your V6 or V8 GM vehicle to run in full cylinder mode at all times, preventing the Active or Dynamic Fuel Management system from dropping cylinders. Our patented technology is the only product that will disable Active or Dynamic Fuel Management without reprogramming the factory ECU. Full power delivery all the time without factory warranty concerns. Features: Range AFM/DFM Disabler keeps you in full power 100% of the time Simply plug into your onboard OBD-II port and it instantly begins working to eliminate the AFM system The power & control you need in any situation The Range AFM/DFM Disabler does not reprogram your factory ECU Leaves no trace - Unplug it to return to factory settings Fits V6 & V8 General Motors (GM) active or dynamic fuel management vehicles, includes cars, trucks & SUVs This device does not currently support the 2022 Refresh model trucks or SUV's Specs: Brand: Range Technology Color: Blue Emission Code: 7 Product Type: Tuner

Brand: Range Technology


Power Source: Corded Electric


Product Dimensions: 5.91"L x 1.97"W x 4.69"H


UPC:


Manufacturer: HOLLEY PERFORMANCE PRODUCTS


Is Discontinued By Manufacturer ‏ : ‎ No


Product Dimensions ‏ : ‎ 5.91 x 4.69 x 1.97 inches; 1.76 ounces


Item model number ‏ : ‎ RET-RA003B


Date First Available ‏ : ‎ May 1, 2017


Manufacturer ‏ : ‎ HOLLEY PERFORMANCE PRODUCTS


Best Sellers Rank: #3,049 in Automotive (See Top 100 in Automotive) #3 in Automotive Replacement Engine Management Systems


#3 in Automotive Replacement Engine Management Systems:


Customer Reviews: 4.6 4.6 out of 5 stars 3,563 ratings


Frequently asked questions

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Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

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View our full returns policy here.

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Top Amazon Reviews

    • No problem after no start for 9 days
My truck is a 2021 GMC Sierra 1500, at4, 6.2 l. I've been using this device since Nov. 1, 2024 and it works as advertised. I'm a conservative driver and 'around town' before installation was ~16.5-17.5 mpg. After installation it is still ~16.0-17.5 mpg. Before installation a 100 mile hiway trip (75-80 mph) was 28.5 mpg. After installation the 100 mile hiway trip (75-80 mph) is 28.9 mpg. Same stretch of hiway and similar weather/road conditions. The longest I've let my truck sit without starting was 9 days with high temps of mid 50s F and lows of mid 30s F and had no trouble starting/driving it. I installed this to ease wear and tear on the engine, not in the hopes of better gas mileage. Quicker acceleration from any low speed to any high speed. Haven't timed it but there is no lag in acceleration from 0-80 or 30-90. ... show more
Reviewed in the United States on January 10, 2025 by Blue Lightning
    • Like a new truck
This works, pricey but worth the $$$$ unbelievable difference in performance.
Reviewed in the United States on January 7, 2025 by Scott H.
    • Works perfect! Highly recommend.
I had 2 Suburbans with the AFM Cylinder deactivation 5.3L. I traded them in because the fear of them going out without warranty. I trade them both in for a 2020 Cadillac Escalade 6.3L also with the AFM cylinder deactivation with CarMax and 150k warranty. I purchased this device to ensure my engine doesn’t go out by deactivating the system. Ever since I installed it my MPG increased by at least 4mpg (I kid you not), the engine runs way smoother, it doesn’t hesitate like it did before, and it has always stayed on 8 cyl. I have only used it for 2 months but so far it has performed flawlessly. Mine doesn’t lit all the LED lights but only at the very beginning and then I think it only keeps 1 on or so. (Haven’t paid much attention). I never take it off and it has not killed my battery or alike. It is installed on my daily driving car. ... show more
Reviewed in the United States on August 26, 2024 by A1 RV Repairs and Services
    • Better than I’d hoped
My 09 5.3L has been with me for 14 years. For the last 11 years my check engine light has been on “ P0523 oil pressure sensor/high input “ . I’ve replaced the switch & the wiring harness & it never fixed the problem. After 190,000 miles I had 2 lifters fail so I decided to put a remanufactured motor in. The shudder when it goes to 4 cylinder mode was more noticeable after the swap … so I decided to give this AFM disabler a shot. After all I’d already spent 8 grand on a motor- why not another couple hundred?….. anyways I’ve had it a week so far. Noticed the shudder was gone immediately. My battery didn’t die & on day 2 the check engine light went off. No more P0532 after 11 years! I’m happy with this lil device. Hopefully this one will last & was worth the extra money vs a cheap one. Hasn’t thrown any codes since. ... show more
Reviewed in the United States on February 16, 2025 by Moe420
    • Definitely worth the money!!
Does exactly what it says! I have a 2021 trailboss with the 5.3 10 speed and it's like having a completely different truck. Shifts better and has way more power on demand. Disabled my start / stop. The light is still on but it doesn't turn my truck off anymore. Awesome product!
Reviewed in the United States on November 7, 2024 by D.k
    • Works great. stops Auto off.
Works exactly as advertised. Deletes auto off, which is wonderful in and of itself! Keeps all cylinders firing nicely as well.
Reviewed in the United States on February 2, 2025 by Frank Walton
    • Better than expected results
Put this on my wife’s Yukon Denali with 6.2. Folks will wanna discredit my statement but I actually boosted my fuel mileage by almost a mile per gallon. Transmission shifts less and no hesitation. It will drain a battery over time if not driven. Especially with an older battery.
Reviewed in the United States on January 31, 2025 by LEIGH ANN COULON
    • Just buy it! It works! Thanks Youtube!
I want to start by acknowledging that I am not particularly knowledgeable about vehicles. I bought my 2019 Chevy Silverado because I needed a truck and assumed that, being one of the most popular trucks, it would be reliable. Unfortunately, I was mistaken. I’ve experienced numerous issues with the truck, including problems with the transmission, air conditioning, alarm, and horn. The situation has progressively worsened, with the truck stalling, running roughly at various speeds, and exhibiting strange shifting patterns. I took the truck to my local mechanic, who advised that the problem might be related to the vehicle’s computer and recommended visiting a dealership. Despite having a 3rd party extended warranty, I was anxious about the potential costs, as warranties often do not cover all issues. I came across this device on YouTube and was initially hesitant due to the low cost. I considered opting for a even cheaper alternative but decided to invest in the more expensive one, hoping it would address the problems. I am pleased to report that this device has resolved nearly all of my issues. The air conditioning still has some minor issues when idling, but it's significantly improved. Most importantly, the strange shifting, vibrations, and other performance issues have been largely eliminated. The only remaining issue is slight vibration during shifts between second and third gear, but it is not nearly as severe as before. While I cannot guarantee this product will work for everyone, it has proven effective for me and likely saved me thousands of dollars in dealership repairs. It’s definitely worth considering if you’re facing similar issues. ... show more
Reviewed in the United States on July 17, 2024 by TexasTed

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