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When it comes to horsepower, dropping cylinders is a recipe for flat-lined performance. This especially holds true with Active Fuel Management (AFM) systems installed on V8-powered rides and rigs. While they're great for saving you at the pump, turning a V8 monster into a wheezing 4-banger understandably kills performance. Wake up all 8 of those potent pistons for full-time power with the Range Technologies Active Fuel Management Disable Device.

If Active Fuel Management has a stranglehold on your ride, the Range Technologies Active Fuel Management Disable Device is the answer. This powerful module completely disables AFM, allowing your ride to run on 8 cylinders constantly. All it takes is a few seconds to locate the diagnostic port in your ride and plug in the Range Technologies Active Fuel Management Disable Device. This results in a more responsive ride with all 8-cylinders available full-time and ready for action.

No adjustments are needed to enjoy the full performance of the Range Technologies Active Fuel Management Disable Device. And all changes are fully reversible, so if you need to restore the stock Active Fuel Management program, simply turn off the engine and unplug the device. Say goodbye to unpredictable power and snail-like acceleration with a Range Technologies Active Fuel Management Disable Device. Best of all, Range backs their Disable Device with a 1-year warranty.

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Range Active Fuel Management Disable Device Customer Reviews

Average Rating

126 Customer Reviews

GM's AFM disabler.

Reviewed by Todd P (New Franken, WI) Reviewed for a 2007 Chevy Tahoe — Monday at 12:48 PM

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This product does what it states, leaves truck in 8 mode. Plug and go simple connection. I installed a on off switch for it so when the truck sits for a few days the battery will not drain.

2011 GMC Sierra 1500

Reviewed by matthew h (GRAND COULEE, WA) Reviewed for a 2011 GMC Sierra — Dec 19, 2014 5:26 AM

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Range product works well. It was easy to install. The AFM was causing my truck to "learch" when stopped at slow speeds (engine shifting from 8 to 4 cyclinders). Also had a lot of burnt oil leaving black residue near the tailpipe. The common problems you see with the GMC FLEX Fuel design. This product fixed them all. I did loose 2 mpg 19to17. More instant power overall. Good product to purchase if you decide to keep the truck instead of sell or return for one without the AFM issues.

2009 Silverado 5.3L

Reviewed by Michael G (AMARILLO, TX) — Dec 14, 2014 4:56 AM

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I noticed an annoying exhaust note change when the AFM would kick in. The range device corrected that problem instantly. Product seems to well constructed of solid materials. I haven't had a chance to check any mileage changes but at this point I am satisfied to have the engine at full power. The truck is more responsive to the throttle.

satisfied customer

Reviewed by Casey M (BOONS CAMP, KY) Reviewed for a 2008 Chevy Silverado — Dec 13, 2014 4:11 PM

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the range device works great better fuel economy more power and faster shifting would recommend to everyone with AFM engine.

I am glad that I found range for my 2013 5.3 silverado.

Reviewed by dale w (OSKALOOSA, IA) — Dec 13, 2014 7:21 AM

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I own a 2013 silverado with afm. I plugged in my range and I have v8 engine operation all the time, I think this will be better for my engine the fuel millage is about the same so I am very happy as of now.I will report back if I have any problems. Dale.

Range Active Fuel Management Disable Device

(126)
  • $199.00
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  • Ships By 12/26
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