AFM Disabler Active Fuel Management Delete Disabler AFM/DFM Disabler Compatible with V6 & V8 GM Motors AFM Disabler 5.3 Silverado (Chevy GMC Sierra GMC Yukon Cadillac Escalade etc)4.3L 5.3L 6.0L 6.2L

I was hesitant to buy specifically one of these unit of this brand just because of "What you pay for is what you get" after reading much reviews for another brand "Range" and didn't want to spend $230+ for something that does exactly the same vs these Amazon brands (signifcantly Cheaper). I have found these Amazon brands to be more reputable with reliability, consistency, and MPG in mind. so I pulled the trigger on one of these Amazon ones instead. I was kind of hesitant to write a review because I was thinking if I should wait a bit to test and trial for this AFM disabler but I did so that it might help others make a decision. But I did order it. Arrived quickly, easy installation. Nothing durable about a unit like this of this nature, it's responsive so far, hence it's working so its compatibility with my suburban is good. Good for it's value. I drive a 2019 Suburban 5.3 4WD LT WITH 107,XXX miles , six days into it so far and I have not seen it switched back into v4 at all. Before I ran the AFM DISABLER, I would normally drive it in the L mode and leave it in L5 and it would never go back into v4 at all but with L5, the engine will rpm around 2500-2600 at L5, hence not get good gas mileage, while L6 rpm will go alot lower around I think around 1500-2000 and save gas more gas but the AFM will engage and go back to v4 BUT! (Just less frequently vs regular DRIVE mode whereas it would be more frequent) With this unit installed, according to the readouts, I believe I have saved a few MPG I want to say around 4mpg more. I use to have best scores of 17.x but with this unit on, I was getting 20-21.3 mpg on the freeway. The picture will help you get a better idea; Speed, rpm, etc So far, Im happy with it, not super stoked about it, but better than having to see the car go into the stupid v4 mode And prematurely damaging the engine. Previously, having to replace 1 lifter, rollers and 2 valves. I am still listening to how my suburban is responding and behaving with this AFM disabler on and connected). I will update review from time to time.

This was a very pleasant purchase, and the product is extremely convenient to use. After installation, the vehicle's power delivery feels more stable; the occasional sensation of mode switching I experienced previously has been significantly reduced, resulting in a smoother feel during daily driving and acceleration. The build quality is excellent, operation is simple, and it has met my expectations for driving comfort.

I use this on my v8 5.3 2017gmc sierra, I was worried at first and “iffy” about it, but I’ve had nothing but positive feedback back about it. For the price it’s worth it really easy just plug it in and it automatically does the rest. I’ve had it for 2 months and I’ve noticed a difference on my truck. Better throttle response, and I actually have seen better gas mileage, I was worried it was going to be the opposite. I leave it plugged in and never have had an issue with my battery. I only have noticed that after a while I would get a jerking motion when I would break, but I just unplugged it for a couple of days and it went back to normal(or you can unplug the battery for a bit and it’ll reset) and just replugged it again and functioned normally again.

Five star review. This afm disabler is a trustworthy product and the results are real. It's not some gimmick and is helping vehicles on the road that have cylinder deactivation drive like a normal vehicle now. This design is excellent and simple you just plug into the OBD port and it does the rest. When the vehicles computer says to shut off half the cylinders the disabler says no run all of them and effectively prevents them from shutting down. The product is not bad of a price and it will last a very long time just be careful of the prongs and the plastic device could be better quality it is cheap but looks good in carbon fiber color. Contours around the fingers for easy plug and play or removal speaking of which be sure to unplug it if not driven daily. We did do a very thorough test on this product and the results were perfect. We did leave the device plugged in for over a day and tried to start the car and heard a click like the battery, after not even a second was a short lag and it started when the car never did that before so remember there is battery draw when plugged in. Runs off your battery no matter what so unplug it when not in use. Initial start up lights and flashes green every few seconds means it's active. Let's get into product performance now, instant fix, noticed the difference right away. Better throttle response, faster acceleration, there's no little mechanical feel anymore or anything it just shifts and runs like an ordinary vehicle without afm even though the hardware is obviously still there in the engine. Our test results shown much improvement and this is what it's supposed to be like driving. Why would you want one of these disablers? Think of how this system works and it's pros and cons, it shuts down to save around 15% on gasoline which isn't much in the first place. Secondly there is a possibility the lifters will fail causing the engine to grenade itself. There are these little cylinder shape lifters with a spring on each end and it's controlled by oil pressure if not mistaken, inside is another piece that slides up and down. Whenever you have your foot into it the pieces move and if that spring gets jammed down it gets stuck and runs into the plastic piece holding it there and things start to shake violently and without a place to go the lifters can even go sideways causing the engine to grenade itself. If it fails you'd have to get a whole new engine in some cases. Well thought out idea but poorly executed afm and dod. This product effectively prevents this scenario from happening but can still fail. It is much cheaper than a delete kit which removes all the hardware and has to retune the ecm computer. Keep up to date on oil changes too. This product says it works on most if not all GM vehicles which is the best thing it's not limited to a single type making it very universal. It's great to use all the power all the time. Highly recommended product and the results are real. Update one month later the product has been absolutely perfect, should have done this sooner but never too late for preventative maintenance.

I bought this to stop my truck's engine from shutting down cylinders, and it's been a great purchase. It's super basic and easy to use: literally just plug it in and you're done, it doesn't even take 5 seconds. You can feel the difference right from the first use; the driving is much smoother and the vehicle responds better when accelerating. It does exactly what it promises without giving any problems.

I am very satisfied with the results. Installation takes just a few minutes, and the device operates silently in the background. I’ve noticed smoother, more stable power delivery, especially in driving situations that require consistent performance. The product is solidly built, and the plug-and-play design makes it ideal for beginners. Be sure to verify vehicle compatibility before purchasing, as fitment depends on factors such as model year, engine type, and factory specifications. Overall, this is a simple yet practical upgrade that has significantly improved my daily driving experience.

I purchased this AFM/DFM Disabler for my 2017 Chevrolet Silverado Black Widow with only 51k miles, and overall it has been a solid device. It has consistently kept my truck in V8 mode, which is exactly what I wanted. I had read some reviews mentioning concerns about the device draining the battery, but I personally have not experienced any battery issues while using it. It has worked reliably since I plugged it in. I also saw claims that it could improve fuel economy. In my case, I haven’t noticed any change from my 9.3 MPG average, but my main goal was maintaining V8 performance, and it does that well. The price was reasonable, and I would recommend this product to others looking to disable AFM/DFM. Note to seller: I’d also be willing to test and review more of your products in the future. 4-star review ⭐⭐⭐⭐☆

This product is well-made, with excellent attention to detail regarding connectors and finishing; the installation process was straightforward and trouble-free. In use, the vehicle performs as expected, meeting all daily driving requirements. Compared to complex modifications, this compact accessory is much easier to install and saves a significant amount of time. It offers good compatibility and proves stable and reliable in daily operation. With secure packaging and clear instructions, it is a practical accessory for car owners with such needs, offering great overall value.

worked perfect on my Camaro 2018

2009年シボレーシルバラード5.3Lへ取り付けいたしました。 V8から切り替わる事もなく機能しています。 微妙なアクセルコントロール時のV4からV8への切り替わりタイミングで一瞬もたつくようなぎこちない挙動もなくなりスムーズになりましたが元々のコンピューターが燃費を良くするためのプログラムなのかレスポンスはタルい感じのままです。 まぁリフターの固着トラブル対策なので少しは役にたつのかなと思います。

Perfect, work as it should do, no problems at all.

I will start by saying that I am a retired mechanic so my review might carry a little weight. With that said, this disabler works great. I have a 2018 Sierra 1500 and I was a bit skeptical because of some of the reviews, but I have had zero issues after one month of using. The exact opposite, actually. No more bogging down on 4 cylinders. The throttle is much more responsive. I installed a cat-back Flowmaster exhaust system because the original GM muffler rotted out on both ends. The drone from the AFM was driving me nuts. The issue has disappeared. I was expecting a bit lower gas mileage, but it's actually better now. Before using the disabler my average fuel economy was 17.5L/100kms I ran it for 100kms after installing the disabler and it dropped to 15L/100kms. I also let the truck sit for a solid week to see if it drained the battery. Before starting it I took a voltage reading at the battery and it was 12.6v, so no parasitic drain from the disabler. I didn't experience any check engine light as some others mentioned. All in all, I consider this disabler to be one of the, if not the best purchases I have made for my Sierra. I 100% recommend this product.

Just wonderful. No more rough downshifts and hesitation when I step on the accelerator. Much smoother drive. I got it for my 2020 sierra 1500 with the 6-gear transmission.