RANGE AFM device
Thread Starter
Burning Brakes
Joined: Jul 2007
Posts: 1,168
Likes: 288
From: Springfield MA
St. Jude Donor '10-'11-'12, '19, '21
RANGE AFM device
Hi gang, is the AFM DISABLER really worth the cost. I'm still hesitating the purchase of this devise. Thoughts please !!!!
Dave
Dave
Popular Reply
Aug 3, 2021, 09:00 PM
Pro
Joined: May 2021
Posts: 500
Likes: 433
From: Queen Creek, AZ
Buy directly from the Range site for the latest version of programming and read this: The real reason why Corvette C7 Stingray uses steel torque tube and why this signifies the fundamental failure of the new car | corvette c7 stingray and Z06 exposed (wordpress.com)
Instructor
Joined: Sep 2019
Posts: 224
Likes: 167
From: Conifer, Colorado
GM generally speaking is very good at increasing fuel economy in their vehicles. I'm not a fan of cylinder deactivation. I understand if you drive the A8 transmission in manual mode, the AFM is disabled. So maybe that is an alternative. I am in favor of using a Range device if manual mode isn't desirable for you. Others more experienced than I will surely chime in with their experiences.
David
David
Pro
Joined: May 2021
Posts: 500
Likes: 433
From: Queen Creek, AZ
Buy directly from the Range site for the latest version of programming and read this: The real reason why Corvette C7 Stingray uses steel torque tube and why this signifies the fundamental failure of the new car | corvette c7 stingray and Z06 exposed (wordpress.com)
Burning Brakes
Joined: Jan 2020
Posts: 808
Likes: 399
From: NW Georgia
I think that a Range Device is the best investment you can make, not only on a C7 Corvette with an A8 transmission but on any GM vehicle that has AFM. Cylinder deactivation can't be good on lifters, transmission and drive train over the life of the vehicle. Had one on my 16 Stingray with the A8 transmission, worked well and did exactly what it was supposed to do, make a V8 engine run on 8 cylinders. I agree with the previous post, order directly from Range Technologies to get the latest version.
Last edited by seniorstorekeeper; Aug 3, 2021 at 09:24 PM.
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Instructor
Joined: Jul 2021
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I had issues with AFM in other vehicles, so the Range was one of the first things I added. It works. No V4 mode. No shuttering between modes, which can be frequent unless you are on the interstate with cruise control on.
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I agree with everyone above - the AFM Eliminator is well worth the money. Buy directly from Range Technologies, get the latest version and be assured of a full warranty on the item.
Racer
Joined: Oct 2018
Posts: 256
Likes: 108
From: Texas
I am working on that theory right now. I have a range and just received my Diablo so I can see if there is a difference in how my car acts with AFM disabled.
Instructor
Joined: Jul 2021
Posts: 142
Likes: 61
Range won't effect warranty. A tune typically does, but I've never done a ECM tune on anything under warranty, so maybe GM doesn't care, I know the quickest way to void a Harley warranty is to do a performance tune then take it in for service.
Pro
Joined: May 2021
Posts: 500
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From: Queen Creek, AZ
Melting Slicks
Joined: Jul 2015
Posts: 2,257
Likes: 784
From: Nashville TN
Get one. I bought mine pre-owned from the forum.
Just remember to unplug several driving cycles before emissions testing if requiured, and you may elect to remove it prior to taking to dealer for service as well (I have not, but do unplug it there so they can access OBD-II port).
Just remember to unplug several driving cycles before emissions testing if requiured, and you may elect to remove it prior to taking to dealer for service as well (I have not, but do unplug it there so they can access OBD-II port).
Melting Slicks
Joined: Feb 2018
Posts: 2,199
Likes: 1,057
From: North Texas
Everyone has their opinion. To get to the true facts on installing and removing a Diablo tune for warranty work you need to talk to the people that manufactures them, Diablo.
They will walk you thru the process and explain how it works so it isn't detected when you need to take your car in for warranty work. Just flash it back to stock before you take it in to GM.
It still is the best way to turn off AFM thru the ECM computer, not by tricking the system every time you start the car. Ever notice that you have to unplug the Range for a couple of weeks before getting an inspection? Thats because the Range is constantly clearing all the DTCs every time you start the car. This 'feature' removes all the DTCs that you would need to troubleshoot an issue with the car.
The Diablo does not clear DTCs every time you start the car. It just sets the AFM 'switch' inside the ECM to off just like driving a M7, out of Eco mode, or a A8 in manual mode.
They will walk you thru the process and explain how it works so it isn't detected when you need to take your car in for warranty work. Just flash it back to stock before you take it in to GM.
It still is the best way to turn off AFM thru the ECM computer, not by tricking the system every time you start the car. Ever notice that you have to unplug the Range for a couple of weeks before getting an inspection? Thats because the Range is constantly clearing all the DTCs every time you start the car. This 'feature' removes all the DTCs that you would need to troubleshoot an issue with the car.
The Diablo does not clear DTCs every time you start the car. It just sets the AFM 'switch' inside the ECM to off just like driving a M7, out of Eco mode, or a A8 in manual mode.
Thread Starter
Burning Brakes
Joined: Jul 2007
Posts: 1,168
Likes: 288
From: Springfield MA
St. Jude Donor '10-'11-'12, '19, '21
RANGE devise
I saw, somewhere on the forum, that the devise will run your battery down if left plugged in all the time. Any one had a problem with this. Is it best to unplug it if storing Vette for more than a few days?
Dave
Dave