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Your cart is empty.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.;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 and 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 all V6 and V8 General Motors (GM) active or dynamic fuel management vehicles, includes cars, trucks, and SUVs.;
Tom
2025-09-06 12:15:04
It works exactly as advertised. Keeps my 2017 Silverado 5.3motor in V8 mode all the time. I didn't want any valvetrain issues while the computer turns off 2 or 4 cylinders. So your questions would be: Is there a power increase? No. Does it use more gas? No. But for me it's all about keeping my top end of the motor safe!! As far as installation, there's nothing easier. Just plug it in and let it do it's thing. Amazon had the best price too.
Customer
2025-08-25 11:42:02
Basically you just plug in and forget it’s there. Takes only a few seconds. Works exactly as advertised, zero instances of switching to v4 function once installed. I haven’t really experienced more apparent power that some others described but certainly haven’t lost power. I have experienced a 5%-10% decrease in mileage but still have seen 21-22mpg highway mpg in my 2017 GMC 1500 5.3 on relatively flat drives. Oddly I seem to have greater mpg loss in city driving than highway but I’ve only had this for a thousand or so miles. Truck had 70k miles when this was installed. I’m leaving it on and living with the mpg loss as insurance for preventing engine failure. I do change oil on recommended cycle, now 5k miles as well.
Teresa Dunne
2025-08-05 13:05:42
I have a 2012 Silverado with 110k miles & 2016 Tahoe 80k, The Range has brought piece of mind and quiet driving. I havent had it long enough to notice any difference with oil consumption or fuel levels yet. The Silverado on avg is close to 2 qts low oil between changes, (Not burning oil) hopefully the range helps, The transition between gears driving local has significantly improved. No more shutter and flutter while driving local or within that 35-45 mph, no more clunk or knocks when cruising in town. I can swap the Range between the 2 vehicles without any issues and it works flawlessly with both. I wish I knew of this long ago. Full V8 power all time is the way I prefer it. I've had it connected for up to 4 days without starting the vehicle and it started no problem (upstate NY weather in Nov) If I'm planning a long road trip perhaps I'll disconnect and attempt to use the Fuel management as intended. For local driving and short hwy exit to exit, the range will stay connected. Absolutely worth it compared to engine repair or permanent afm delete.
Terry E.
2025-07-30 17:38:06
So far so good, works like they said.
cr454
2025-07-23 13:04:32
I bought this to disable the AFM on my 2016 Sierra Denali. This device is easy to use, and does keep the truck in V8 mode at all times. The first time I used it, my transmission was shifting better than it ever has, and I couldn't believe how well the truck was driving (I've been experiencing the harsh shifting of these transmissions and I've tried the new torque convertor and fluid flush to no avail). After several more miles with this device, the transmission has gone back to its old way of slamming gears. I'm glad to know that the engine is not cutting back on cylinders, but it's too bad that the smooth shifting did not stick around. I've seen several other reviews that say the truck had improved shifts, so I'm disappointed that was not the case for me in the long term.
M Corley
2025-07-17 15:40:57
Quick, easy, effective. Just plug into OFD 2 port and it works. Great price and functionality
Santiago R.
2025-07-09 13:20:04
😎ðŸ‘
Jake
2025-06-17 14:10:52
Everyone should have this if they a dod engine. Truck runs better more acceleration no oil burning
Miguel Ãngel cruz Jahuey
2025-05-18 20:12:24
Cumple con lo que promete, mejora el funcionamiento.El paquete llegó abierto sin embargo funciona, solo tengo dudas, no especifican si tiene garantÃa
Christian
2025-04-04 12:19:28
Works awesome, no issues, so simple and mileage in my Yukon XL actually improved slightly without it kicking in and out of 4 cylinder mode.
Paul
2025-02-13 13:22:02
I am in Australia. Ordered through Amazon. I read as many reviews I could find. Used in the Chev 1500 Silverado for a week or so and found it to be as advertised. Can't fault it at this time.
D
2025-02-12 17:58:52
I knew the v4-v8 will one day fail on my truck. Then I heard this device keeps it in v8 permanently until I decide to unplug it. It’s been working as it said it would, and I’m actually getting better fuel mileage.
Traveloneusa
2025-02-06 10:59:22
Cumple lo que promete. Definitivamente lo recomiendo
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