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By Jonathan Floyd
I was hoping y’all could help me on my decision. I have a 2019 custom trail boss 5.3 with AFM 6 speed. I called the local dealership here and asked how my warranty would be effected if I disable the AFM. They told me “as long as that tune didn’t cause the damage of whatever i bring the truck in for all is well.” So they recommended me to a local tuner here in town which was surprising. I called him and he said to disable my AFM it would cost around 500. I do know about the range device but I don’t want to to deal with the battery issues it can cause if you mistakenly leave it plugged in. My other option is the hand held tuners such as a diablo. I have zero experience with them but I am going to put in a cold air intake and flow master 44 exhaust in the future. Would my best bet be the Diablo tuner to disable the AFM and use it to adjust my truck to my other mods or go with the professional tuner?
Range AFM Disabler - Version 8.6 (Plugged it into my new truck and got 8 and 6 flashes) Fits 2014 - 2019 Legacy
$50.00 Buyer pays for shipping from 48611
So I have recently purchased a Range AFM disabler for my 2017 Silverado 1500 E-assist because of the constant stopping and starting at stop lights, exhaust drone from V4, weird shifting from V4 to V8 and my transmission liking to jerk/shifting hard every so often.
After installing the Range device, it has solved my transmission issues, disabled stopping and starting at stop lights, and has been keeping it in V8 mode 24/7! The only thing I have noticed is that when I am decelerating from a speed of around 50 MPH or more, the engine will have a fast repetitive backfiring popping sound until i either get back on the gas pedal or have reached a speed of 35 MPH.
It seems to happen when i am decelerating slowly and not fast, starts to backfire when it starts to downshift at around 900-1100 RPMs
I have a flowmaster Super40 cat-back dual 2.5 inch exhaust with the third "cat" still on. It used to not backfire when the AFM was active BUT when decelerating, it would switch back into V4 mode. is there a way to fix this? Is there too much freeflowing exhaust? Can this backfiring through the exhaust cause any damage if left unfixed?
Have a range module for sale. Bought it for my 2016 5.3. Ran it for a couple of weeks and decided I just didn't want it. Basically brand new, selling it for $125.00. Let me know if you're interested.
I know the subject of AFM either deletion or disabling has been beat with a stick but as I was doing some digging I came across a couple of articles that had me wondering. So I recently just ordered a Range for my '16 5.3 and am/ was eager to install it but.... I read that when disabling AFM in the long run it can hurt the motor i.e. lifters. My question is, has anyone been running a AFM disable tune/ flash for a few years and had any issues?
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