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54 Reviews
Beats doing all the work
Got rid of that silly v?4 to V/8 back & forth mode. It now stays in V/8 mode
which is better for engine life. My opinion without this down the road your looking at pulling off both heads, removing the camshaft & lifters & replacing them,
lot of labor & part cost. Runs much better & smoother in V/8 mode.Read full review
Verified purchase: Yes • Condition: new • Sold by: madison-motors
Range AFM Disabler
Bought this product for my 2014 Silverado and it works amazing. The engine runs smoother and is more responsive, the transmission shifts are now smoother and the gas mileage hasn’t seemed to decrease after installing this product. I Absolutely love it and would recommend to anyone with a GM vehicle wanting to disable the Active fuel management system on their vehicle! Installation is a breeze just plug it in to the OBD port and that’s it!
Read full review
Verified purchase: Yes • Condition: new • Sold by: premium_perform...
Making engine problems easier!
I am happy so far, this product does exactly what it says, straight v-8 power, quick throttle response, very satisfied. You won't see better fuel because your in v-8 mode all day, but if you own a v-8 you don't need 4 cylinder mode anyway. Thank you for making an affordable way to override the AFM problem. Read full review
Verified purchase: Yes • Condition: new • Sold by: rudys_performan...
Its awesome
Its easy to use. No extra tuning needed. My 16 gmc has better acceleration and it sounds great with all 8 cylinders screaming.
Verified purchase: Yes • Condition: new • Sold by: maxflowmotorsports
Seems to do what it promises
I've noticed more power/consistency while accelerating. I've also left my truck sitting for a few days with the device attached. I did not experience any hard starting, so I don't believe any parasitic drain occurred on my 2013 Silverado. So far so good. Hopefully, this little guy solves my AFM oil issue.Read full review
Verified purchase: Yes • Condition: new • Sold by: xyz-partspro
Range AFM
Now my Silverado 1500 stays in V8 mode all the time. No more funky transmission shifting as it goes into 4 cylinder mode off and on as you let off the accelerator. Did actually reduce my overall fuel mileage by 1.2 mpg on an average tank of fuel of regular gas. Highly Recommended. Read full review
Verified purchase: Yes • Condition: new • Sold by: maxflowmotorsports
I might keep the truck now.
I would not have purchased the truck if I had know of the 8 cyl/4 cyl switch in the ECO Trac engine.. GM's biggestmistake caused the truck to pause when accelerating and the transmission to shitf kind of funky.My mechanic told me about this item so I did quite a bit of research and found all those indications to be normal with the ECO Trac engine plus excessive engine wear and valve failure. I immediately ordereda fuel management disabler and am pleased with the results. I may even keep the truck.Read full review
Verified purchase: Yes • Condition: new • Sold by: maxflowmotorsports
Quality Product
This product does what it promises, the truck shifts as it should, eliminates hard downshifts , gas mileage may have got better. Not enough miles for a good test.
Verified purchase: Yes • Condition: new • Sold by: aaco85205
No more V4
Can tell the difference in transmission and drivability of my truck as soon as I plugged in, it should help save gas seeing that I don’t have to almost stomp peddle to come out of V4 mode highly recommend on AFM motors Read full review
Verified purchase: Yes • Condition: new • Sold by: aaco85205
Easy install plug into OBD 2 turn your engine on blue light flashing your good to go
If you own a Chevy or GMC And you’re tired of the up down shifting, loss of power 8 cylinders back to 4 cylinders buy this product you won’t be disappointed you may even get better mileage I did with the power of 8 cylinders.Read full review
Verified purchase: Yes • Condition: new • Sold by: maxflowmotorsports