⚡ Power Up Your GM Ride — No Compromises, Just Pure Performance!
The Range Technology AFM/DFM Disabler by Holley Performance is a plug-and-play tuner that disables Active/Dynamic Fuel Management on V6 and V8 GM engines, ensuring full cylinder operation at all times without ECU reprogramming or warranty risk. Compatible with most GM vehicles, it delivers consistent power and control while allowing easy reversion to factory settings.
| Manufacturer | HOLLEY PERFORMANCE PRODUCTS |
| Brand | Southwest Speed |
| Item Weight | 1.76 ounces |
| Country of Origin | USA |
| Item model number | HOL-RA003R |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | HOL-RA003R |
W**H
Works fantastic and simple to install.
I noticed the difference almost immediately when driving. I recommend this device to everyone.
A**L
Read review first
Item works great. Runs V8 all the time. However just went for vehicle inspection. Failed because 2 sensors were "not ready" mechanic said remove device and come back after 200 miles. Hope that works
D**R
Works great
Worked as advertised! Game changer for our Corvette!
D**S
Best money I have spent on my truck!!! Fixed SEVERAL issues.
2013 Silverado 5.3L. I had always noticed a slight stutter in the engine. The check engine light was intermittent. It was consuming oil. And recently, in the mountains, it wasn't shifting smoothly and was lagging. Did some research. All those issues were common to the AFM. I took a chance and got this. Just plug and play. So easy. Immediate smoothing of the engine and better power. In a couple days the check engine light went off and stayed off. The other day, hubby took it off, and said the truck ran so bad he put it right back on. Now he sees it too. He said he didn't see much difference, but he does now that he drove it with it running good.Absolutely recommend.
F**O
Every GM 6.2 Liter Needs This Product
Why did you pick this product vs others?:Produced by Holley in the US.Ease of installation:Extremely easy to install and remove Throttle response:Immediate improvement noticed in mid-range throttle response and shifting. Our C7 always ran great in manual mode and higher speeds but this makes the roughness of 4 cylinder mode go away with a minor reduction in MPG. The cruising is much more enjoyable with this and we had the dealer triple flush the 8 speed auto just to be sure.
D**N
Problem solving after market parts
Have had this item a short while now and it has changed the noise of my Silverado and the running on all 8 cylinders quite a joyI am very happy at this time and I hope the motor will be satisfied as well
M**3
Great product, and service.
I needed one of these and after searching through many different ones I came across this one. It was pretty expensive, but the reviews are great, it was easy to install, so far the durability is great. Seems to perform well, however at night driving the red light it puts off is quite brite. That may be the only thing I am not Fond of.
T**S
Works
Works on my 2020 1500 5.3
Trustpilot
3 days ago
3 weeks ago
