Fuse 51 and AFM

DarkCydeCA · 08-23-2019, 09:14 PM

So I pulled the F51 trick on my A8 the other day and have to say that the car sounded like crap in 4 cylinder mode. I assume that this is because of the AFM valves further up in the exhaust system.

Are folks disabling AFM in the tune when doing the F51 pull? If so, is there any point in getting a new exhaust, even an axleback, until after the powertrain warranty expires? All of the videos for aftermarket exhaust systems are either on M6s or at WOT on the A8s. There are no vids that I've seen sampling these systems in 4 cylinder cruise mode, probably because they sound like garbage.

Right now I'm thinking that I wait until it expires and then get the full catback and tune out the AFM. If anyone has any experience with modified tunes and warranty issues, let me know.

Full disclosure: I'm one of those people who value the warranty and don't want to give the dealership any excuses.

Thanks all!

RLem619 · 08-23-2019, 11:25 PM

https://rangetechnology.com/afm-disabler/

Mark114 · 08-23-2019, 11:26 PM

You could buy a Range AFM device. It plugs into the OBD port and keeps the engine in V8 mode without making any permanent changes to the ECU. Unplug it and the engine returns to normal AFM V4/V8 operation.

DarkCydeCA · 08-24-2019, 09:59 AM

Quote:

Originally Posted by Mark114

You could buy a Range AFM device. It plugs into the OBD port and keeps the engine in V8 mode without making any permanent changes to the ECU. Unplug it and the engine returns to normal AFM V4/V8 operation.

Quote:

Originally Posted by RLem619

https://rangetechnology.com/afm-disabler/

Interesting option. I'll take a look. Thanks!

Marco Falcone · 08-26-2019, 07:40 PM

Had my Range (Firmware 8.6) in for over a year now and over 11,000 miles.

Works perfectly. No problems, no CELS, etc.

I even left in plugged in (by accident) while on vacation for almost 3 weeks. Car sat the whole time. Started up just fine. That was about 3 months ago. Still no issues.

I pull it when I take the car in for service. Put it back when I pick it up.

Really makes a huge difference.

MrRuss · 08-27-2019, 05:26 PM

Absolutely, if you like the exhaust sound with the dampers open all the time in V8 mode, get the Range, in V4 mode it sucks. I did for almost a year before I went full bolt on exhaust and tune. I do almost all non-highway driving and only lost about 1 MPG. V4 mode is more valuable to guys that do a lot of highway driving.

driven2exceSS · 08-27-2019, 08:58 PM

Quote:

Originally Posted by Marco Falcone

Had my Range (Firmware 8.6) in for over a year now and over 11,000 miles.

Works perfectly. No problems, no CELS, etc.

I even left in plugged in (by accident) while on vacation for almost 3 weeks. Car sat the whole time. Started up just fine. That was about 3 months ago. Still no issues.

I pull it when I take the car in for service. Put it back when I pick it up.

Really makes a huge difference.

Soleil · 08-28-2019, 09:44 AM

+1
I have pulled my 51 and use AFM Range as well. No problems at all. No farting when going from V4 to V8 anymore.

RLNTLSS · 09-02-2019, 02:07 PM

Can fuse 51pull trick work on 2019 ss?

wwiiavfan · 09-02-2019, 07:46 PM

Another thumbs up for Range AFM delete. Sounds tons better, you'll even get some more crackling when you let off.
Only bummer (and it's a small one), is that you'll see more soot in your outer tail pipes, unless you have a lead foot always.

RLem619 · 09-02-2019, 11:59 PM

Quote:

Originally Posted by RLNTLSS

Can fuse 51pull trick work on 2019 ss?

Yes

08-23-2019, 09:14 PM	#1
DarkCydeCA Drives: 2018 Camaro 2SS Join Date: Jul 2019 Location: Fredericton, NB Posts: 28	Fuse 51 and AFM So I pulled the F51 trick on my A8 the other day and have to say that the car sounded like crap in 4 cylinder mode. I assume that this is because of the AFM valves further up in the exhaust system. Are folks disabling AFM in the tune when doing the F51 pull? If so, is there any point in getting a new exhaust, even an axleback, until after the powertrain warranty expires? All of the videos for aftermarket exhaust systems are either on M6s or at WOT on the A8s. There are no vids that I've seen sampling these systems in 4 cylinder cruise mode, probably because they sound like garbage. Right now I'm thinking that I wait until it expires and then get the full catback and tune out the AFM. If anyone has any experience with modified tunes and warranty issues, let me know. Full disclosure: I'm one of those people who value the warranty and don't want to give the dealership any excuses. Thanks all! __________________ 2018 2SS - Unmodified

08-23-2019, 11:25 PM	#2
RLem619 Drives: 2019 Camaro 2SS A10 Join Date: Feb 2019 Location: San Diego Posts: 207	https://rangetechnology.com/afm-disabler/ __________________ 2019 2SS: A10, Satin Steel Gray Metallic, MRC, Nav.

08-26-2019, 07:40 PM	#5
Marco Falcone Drives: 2018 2SS Convertible MBM/Kal Join Date: Feb 2018 Location: California Posts: 162	Had my Range (Firmware 8.6) in for over a year now and over 11,000 miles. Works perfectly. No problems, no CELS, etc. I even left in plugged in (by accident) while on vacation for almost 3 weeks. Car sat the whole time. Started up just fine. That was about 3 months ago. Still no issues. I pull it when I take the car in for service. Put it back when I pick it up. Really makes a huge difference. __________________ 2018 2SS Vert. MBM/Kalahari. MRR FS01’s with 285/305 MPS4S. Black Bow ties, A8, MRC, NPP, 6-piston Brembo’s w/ matching rears, OEM Ground Effects/Splash Guards, 8”/Nav. Borla S-type, Pray IM/TB, RotoFab. Past DD’s of note: 2013 Caprice PPV. (“Company” car.) 1998 Cadillac STS 1996 Impala SS 1969 Cadillac DeVille Convertible 1993 Corvette 1991 Mustang 5.0 LX 1973 Alfa Romeo Spider 1986 Mustang GT T-top 1964 Falcon Sprint Hardtop. (First car, still have the key!)

08-27-2019, 05:26 PM	#6
MrRuss Drives: 2016 Camaro 2SS Join Date: Mar 2018 Location: Chandler, AZ Posts: 207	Absolutely, if you like the exhaust sound with the dampers open all the time in V8 mode, get the Range, in V4 mode it sucks. I did for almost a year before I went full bolt on exhaust and tune. I do almost all non-highway driving and only lost about 1 MPG. V4 mode is more valuable to guys that do a lot of highway driving. __________________ Mr Russ Tim "the tool man" Taylor is my hero My Garage: '16 Chevrolet Camaro 2SS, Summit White, Adrenaline Red -- Rotofab CAI, Soler TB, 1 7/8 coated LT's, Full 3" mids, 3" Stainless Works NPP mufflers, Flex Fuel, E85/91 tuned '20 Honda Oddysey Elite 25th Anniversary Edition --wifes car, she said "No more SUV's" after the 2 CX-9's totaled

08-28-2019, 09:44 AM	#8
Soleil Drives: Camaro 50th anniversary edition Join Date: May 2017 Location: Europe Posts: 2,203 View My Garage	+1 I have pulled my 51 and use AFM Range as well. No problems at all. No farting when going from V4 to V8 anymore. __________________ Soleil _____________________________________________ A car is fast enough, if you fear to unlock it in the morning." (Walter Roehrl)

08-23-2019, 11:26 PM	#3
Mark114 Drives: 2016 2SS Convertible Join Date: May 2012 Location: St. Louis, MO Posts: 1,711 View My Garage	You could buy a Range AFM device. It plugs into the OBD port and keeps the engine in V8 mode without making any permanent changes to the ECU. Unplug it and the engine returns to normal AFM V4/V8 operation.

09-02-2019, 02:07 PM	#9
RLNTLSS INTSAGRAM: Failwish Drives: 2019 /2SS LT1 Join Date: Jun 2015 Location: Tx Posts: 232	Can fuse 51pull trick work on 2019 ss? __________________ 2019/LT1 2SS

09-02-2019, 07:46 PM	#10
wwiiavfan Drives: 2017 1SS Hyper Blue Join Date: Apr 2017 Location: Wisconsin Posts: 478	Another thumbs up for Range AFM delete. Sounds tons better, you'll even get some more crackling when you let off. Only bummer (and it's a small one), is that you'll see more soot in your outer tail pipes, unless you have a lead foot always.

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