Afm/dfm
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Le Mans Master
Joined: Sep 2006
Posts: 9,602
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From: Palm Harbor not far from Sebring Florida
St. Jude Donor '11
Oldtimer
Afm/dfm
I have seen a lot of talk on the AFM/DFM plugins, and I have also seen that they very in price. I am new to the C7 after having my C6 for 11 years. Are they worth it and what ones seem to be the most common?
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I use the Range AFM Eliminator. Works well to keep the car in V8 mode all the time and is reasonably priced.
Melting Slicks
Joined: Dec 2007
Posts: 2,902
Likes: 669
From: North Fulton Georgia
General heads-up.... If you have a MT transmission just never use ECO mode and you'll never have cylinder deactivation... I am assuming most folks posting about this topic have Auto transmissions.
Instructor
Joined: Feb 2016
Posts: 190
Likes: 184
From: MD
Any CONS?
Other than fuel MPG reduction, any long-term cons in using the device for an A8?
Read somewhere you have to disconnect the battery before installation (plug-in)? Would seem counterproductive if you have to unplug say to hook up a Code Scanner/Reader for a quick read.
I don't hear about cons too much, but somethings can be too good to be true!
Read somewhere you have to disconnect the battery before installation (plug-in)? Would seem counterproductive if you have to unplug say to hook up a Code Scanner/Reader for a quick read.
I don't hear about cons too much, but somethings can be too good to be true!
Last edited by Black Rose-MD; Feb 2, 2023 at 03:55 PM.
Advanced
Joined: Dec 2012
Posts: 54
Likes: 13
From: SC
Other than fuel MPG reduction, any long-term cons in using the device for an A8?
Read somewhere you have to disconnect the battery before installation (plug-in)? Would seem counterproductive if you have to unplug say to hook up a Code Scanner/Reader for a quick read.
I don't hear about cons too much, but somethings can be too good to be true!
Read somewhere you have to disconnect the battery before installation (plug-in)? Would seem counterproductive if you have to unplug say to hook up a Code Scanner/Reader for a quick read.
I don't hear about cons too much, but somethings can be too good to be true!
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Drifting
Joined: Dec 2013
Posts: 1,519
Likes: 212
From: FL
Had a 2015 Z51 A8 and used the range device until triple flush and Dyno tune and they disabled AFM. Now have a 19 GS A8 and got the triple flush. Torque shudder was in auto or manual mode and rpm varied about 100 rpm and after flush smooth with no rpm change. Range device fixes nothing and prevents nothing IMO. Do the TSB and forget this snake oil that the range and other devices are touted to be.
Racer
Joined: Apr 2020
Posts: 425
Likes: 272
From: Cape Coral,FL
Other than fuel MPG reduction, any long-term cons in using the device for an A8?
Read somewhere you have to disconnect the battery before installation (plug-in)? Would seem counterproductive if you have to unplug say to hook up a Code Scanner/Reader for a quick read.
I don't hear about cons too much, but somethings can be too good to be true!
Read somewhere you have to disconnect the battery before installation (plug-in)? Would seem counterproductive if you have to unplug say to hook up a Code Scanner/Reader for a quick read.
I don't hear about cons too much, but somethings can be too good to be true!
Thread Starter
Le Mans Master
Joined: Sep 2006
Posts: 9,602
Likes: 971
From: Palm Harbor not far from Sebring Florida
St. Jude Donor '11
Oldtimer
Le Mans Master
Joined: Mar 2016
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From: 2019 CMG Z06/ZR1
Racer
Joined: Apr 2020
Posts: 425
Likes: 272
From: Cape Coral,FL
Thread Starter
Le Mans Master
Joined: Sep 2006
Posts: 9,602
Likes: 971
From: Palm Harbor not far from Sebring Florida
St. Jude Donor '11
Oldtimer