First 5th gen.. is this the dreaded AFM? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

caratemymoney · 10-11-2016, 06:23 PM

So I just bought a 2010 2SS and it's a pretty amazing car

Except when i'm going slow. I'm in NYC so there's a ton of traffic. If i'm going 15-30mph or so and i'm basically coasting or very light throttle and I want to go a little faster, I feel a light vibration or bog. Is this the AFM i've seen all these horrible things about? It feels alot like the torque converter shudder in my old mustang but nowhere near as harsh, maybe more like going over a light rumble strip for a second

imaSSnake · 10-11-2016, 06:33 PM

The MDS system in my previous vehicle, 2014 Grand Cherokee SRT 6.4L was far more noticeable and rough than the AFM on these cars. Well mine anyway.

I *think* you can tune it out. There is a delete kit available

qcman · 10-11-2016, 06:35 PM

Yup thats likely it but it can be tuned out or use a Range device to disable it. My advice don't waste money on the Range (I did) and pay a wee bit more for a custom tune from Dynosteve on here. It will kill the AFM and wake that L99 up into something wild!

myold88 · 10-11-2016, 06:35 PM

First off you must have the L99 Auto to have AFM. If it's an "exhaust noise" that's what it probably
is but their shouldn't be any shudder imo. The AFM on my SS never really bothers me even with
my Solo aftermarket exhaust. Don't notice it.

Homeless Man · 10-11-2016, 06:43 PM

AFM is drreaded lol wtf. Your acting like there's something majorly wrong with the car. It's a technological advancement.

caratemymoney · 10-11-2016, 07:19 PM

i'll get it tuned out of gears 1-4 probably this weekend

if I leave my obd scantool / bluetooth will it force it into v8 mode all the time?

JCunningham · 10-12-2016, 03:07 AM

do you have a manual or auto transmission? only the auto has AFM. your scan tool wont keep it in V8 you need it tuned or a range device.

caratemymoney · 10-12-2016, 11:54 AM

Quote:

Originally Posted by JCunningham

do you have a manual or auto transmission? only the auto has AFM. your scan tool wont keep it in V8 you need it tuned or a range device.

It's auto... if I use the paddle shift it's nice and smooth all the time

PalmerGA · 10-12-2016, 02:00 PM

Quote:

Originally Posted by caratemymoney

i'll get it tuned out of gears 1-4 probably this weekend

Tune it out completely! You obviously don't like it and you really don't need. AFM is a scam GM pulled on the government to avoid the gas-guzzler penalty. At continuous slow speeds (like city driving) it's maddening. At highway speeds (where 5th and 6th is most often used - certainly 6th) you won't really notice a drop in MPGs. Just get rid of it completely - your L99 will love you for it, and you will to.

hrpiii · 10-12-2016, 02:33 PM

It could also be something else..... depending on the traffic speed, or gear the car is in, or how hard/easy you are on the throttle, it may be trying to find the right gear you want to be in. Like it's wanting to either downshift or maybe trying to hold that gear.

Mine will bog like that if I am coming off the interstate on an exit ramp at a good speed and slowing hard as I approach a Yield. As the engine rpms are coming down as I slow and see the coast is clear and back on the throttle, the car was still downshifting and now I'm on the throttle hard again. There is a slight bog right at that point. But that is the only time I have experienced it.

I didn't usually see AFM kick in unless I'm cruising at a set speed for a short time. I have it tuned out now.

scots67 · 10-12-2016, 07:31 PM

Get with dyno steve, let him hook you up! you will not regret it. People that try to tell themselves its not bad or you will get used to it, are just plain missing the boat! you will fall in love with your car all over again. AFM is just plain wrong

Z06-SS · 10-12-2016, 09:09 PM

At only 900 miles I couldn't take it no longer......SCT tuner w/Dyno Steve took care of the AFM and improved performance.

The Blue Angel · 10-12-2016, 10:46 PM

Just did a long tube header and tune on my 2014 1SS L99 Auto. Night and day difference!! With the tune the AFM is turned off. I have all 8 all the time. My Camaro takes off like a rabid cheetah!!! LOL!!!!!

Congrats and have fun!!

ClawSS · 10-13-2016, 06:38 AM

If there is a shudder...and you list a 2010, there was an update to the T/C lockup points at low load / rpm / speed scenario that GM updated. It is possible that your are downlevel on your GM code version.

That said, the right custom tune will bring you up to date as well as "improve" on what was stock.

AFM when done right should only really be heard through a different exhaust note and only felt in your wallet by potentially getting better fuel economy. There is a person on this forum, pir4te, down in AU that is doing some great things with AFM & VVT on his Holden. Good power and good economy and many trouble free miles.

10-11-2016, 06:23 PM	#1
caratemymoney Drives: 2010 Camaro 2SS/RS Join Date: Oct 2016 Location: Abbey Road Posts: 33	First 5th gen.. is this the dreaded AFM? So I just bought a 2010 2SS and it's a pretty amazing car Except when i'm going slow. I'm in NYC so there's a ton of traffic. If i'm going 15-30mph or so and i'm basically coasting or very light throttle and I want to go a little faster, I feel a light vibration or bog. Is this the AFM i've seen all these horrible things about? It feels alot like the torque converter shudder in my old mustang but nowhere near as harsh, maybe more like going over a light rumble strip for a second Last edited by caratemymoney; 10-11-2016 at 07:31 PM.

10-11-2016, 06:33 PM	#2
imaSSnake 'Maro Drives: 2015 SS 6.2L Auto 2SS Join Date: Sep 2016 Location: US Posts: 867	The MDS system in my previous vehicle, 2014 Grand Cherokee SRT 6.4L was far more noticeable and rough than the AFM on these cars. Well mine anyway. I think you can tune it out. There is a delete kit available __________________ 2015 SS 2SS Auto 93 SCT Perf, Kooks LTH & HFC MBRP Axleback Muffler Delete "Z/28" Spoiler and Grille OEM ZL1 wheels 285/305/35R20 BFG G-force Pro Comp 2

10-11-2016, 06:35 PM	#4
myold88 Drives: SUMMIT WHITE 2SS/RS CAMARO Join Date: Feb 2008 Location: 2018: Lakewood Ranch, Fl. Posts: 8,112 View My Garage	First off you must have the L99 Auto to have AFM. If it's an "exhaust noise" that's what it probably is but their shouldn't be any shudder imo. The AFM on my SS never really bothers me even with my Solo aftermarket exhaust. Don't notice it. __________________

10-11-2016, 06:43 PM	#5
Homeless Man Homeless Life Chose Me Drives: LS3 (sold 4/21) Join Date: Nov 2014 Location: Streets of Philly Posts: 3,650	AFM is drreaded lol wtf. Your acting like there's something majorly wrong with the car. It's a technological advancement. __________________ Pity a man in familiar places, who yet feels like a stranger.

10-12-2016, 03:07 AM	#7
JCunningham Drives: 2017 2SS M6 Join Date: Jun 2013 Location: WNY Posts: 7,070	do you have a manual or auto transmission? only the auto has AFM. your scan tool wont keep it in V8 you need it tuned or a range device. __________________ real ZL1 wheels and brakes, 285/305 Michelin Pilot Super Sports, Pray ported Intake manifold, Soler Throttle Body, Rotofab intake, EFI Tuning Flex fuel kit, full American Racing Headers Exhaust, 1 7/8" w/ cats H pipe and mufflers. Full 1LE suspension, with BMR adjustable sway bars and links, GM aluminum cradle bushings, Hurst shifter with lighter reverse spring, TWM shifter knob, Tick level 1 transmission. I should have bought a ZL1

10-11-2016, 06:35 PM	#3
qcman Drives: 2013 Camaro 2SS RDP Tuned L99 Join Date: Apr 2013 Location: Ottawa, Canada eh? Posts: 1,889	Yup thats likely it but it can be tuned out or use a Range device to disable it. My advice don't waste money on the Range (I did) and pay a wee bit more for a custom tune from Dynosteve on here. It will kill the AFM and wake that L99 up into something wild!

10-11-2016, 07:19 PM	#6
caratemymoney Drives: 2010 Camaro 2SS/RS Join Date: Oct 2016 Location: Abbey Road Posts: 33	i'll get it tuned out of gears 1-4 probably this weekend if I leave my obd scantool / bluetooth will it force it into v8 mode all the time?

10-12-2016, 02:33 PM	#10
hrpiii AKA "Beefcake" Drives: 2023 ZL1 Sharkskin Join Date: Oct 2009 Location: Indy Posts: 8,529	It could also be something else..... depending on the traffic speed, or gear the car is in, or how hard/easy you are on the throttle, it may be trying to find the right gear you want to be in. Like it's wanting to either downshift or maybe trying to hold that gear. Mine will bog like that if I am coming off the interstate on an exit ramp at a good speed and slowing hard as I approach a Yield. As the engine rpms are coming down as I slow and see the coast is clear and back on the throttle, the car was still downshifting and now I'm on the throttle hard again. There is a slight bog right at that point. But that is the only time I have experienced it. I didn't usually see AFM kick in unless I'm cruising at a set speed for a short time. I have it tuned out now.

10-12-2016, 07:31 PM	#11
scots67 Drives: 2012 ss rs convertable Join Date: Mar 2016 Location: northern mich Posts: 7	Get with dyno steve, let him hook you up! you will not regret it. People that try to tell themselves its not bad or you will get used to it, are just plain missing the boat! you will fall in love with your car all over again. AFM is just plain wrong

10-12-2016, 09:09 PM	#12
Z06-SS Drives: 2016 Z06 Join Date: Aug 2016 Location: Tennessee Posts: 58	At only 900 miles I couldn't take it no longer......SCT tuner w/Dyno Steve took care of the AFM and improved performance.

10-12-2016, 10:46 PM	#13
The Blue Angel Drives: 2014 BRM 1SS/RS Join Date: Sep 2011 Location: Tampa, Fl Posts: 1,058	Just did a long tube header and tune on my 2014 1SS L99 Auto. Night and day difference!! With the tune the AFM is turned off. I have all 8 all the time. My Camaro takes off like a rabid cheetah!!! LOL!!!!! Congrats and have fun!! __________________ 2014 Blue Ray Metallic 1SS/RS A Road Warrior

10-13-2016, 06:38 AM	#14
ClawSS High-tech Redneck Drives: '10 CGM SS, '02 2500HD, '09 300SRT8 Join Date: Nov 2010 Location: Lexington, KY Posts: 757	If there is a shudder...and you list a 2010, there was an update to the T/C lockup points at low load / rpm / speed scenario that GM updated. It is possible that your are downlevel on your GM code version. That said, the right custom tune will bring you up to date as well as "improve" on what was stock. AFM when done right should only really be heard through a different exhaust note and only felt in your wallet by potentially getting better fuel economy. There is a person on this forum, pir4te, down in AU that is doing some great things with AFM & VVT on his Holden. Good power and good economy and many trouble free miles. __________________ "My friends call me Chris. Are you my friend?" 2010 CGM L99 2SS/RS - GPI SS3 VVT, BTR DoD Delete, Circle D 4c, BTR springs, Katech C5R Timing Chain, MRR-228 315/275, CAI, Elite catch-can, TSP 1 7/8" Headers + offroad pipes, Magnaflow 3", Pfadt springs, BMR LCAs, toelinks, trailing arms, cradle bushings, & sway bars w/ endlinks, Vitesse paddles, heritage grille, and an eBay splitter. Power upgrades by Race Proven Perf.; Tuning by ShorTuning.