SS Automatic Active Fuel Management

[mlee]

AFM is working exactly as it was intended and achieved the MPG goals needed. If you want to complain try mailing your congressman... or buy a ZL1 w/ Auto and pay the guzzler tax... Either way GM is just following the rules.

[Switchback700]

[babaron]

Originally Posted by mlee

AFM is working exactly as it was intended and achieved the MPG goals needed. If you want to complain try mailing your congressman... or buy a ZL1 w/ Auto and pay the guzzler tax... Either way GM is just following the rules.

I would like to be the first to point out (just in case no one else has beaten me to it) that AFM is NOT working according to its design. Specifically, it is supposed to engage only when cruising at a steady speed. But instead, it engages during gentle acceleration and this is what is MOST annoying about it. I know mine does. My wife drives a Honda Odyssey which has the same technology (Variable Cylinder Mgt.) and it engages ONLY when criusing at a steady speed, not at all anoying.

My hope is that GM realizes this fact and puts out a corrected ECM stock tune update that fixes it. (Jeff Morris are you reading this? PLEASE)

[Switchback700]

Originally Posted by babaron

I would like to be the first to point out (just in case no one else has beaten me to it) that AFM is NOT working according to its design. Specifically, it is supposed to engage only when cruising at a steady speed. But instead, it engages during gentle acceleration and this is what is MOST annoying about it. I know mine does. My wife drives a Honda Odyssey which has the same technology (Variable Cylinder Mgt.) and it engages ONLY when criusing at a steady speed, not at all anoying.

My hope is that GM realizes this fact and puts out a corrected ECM stock tune update that fixes it. (Jeff Morris are you reading this? PLEASE)

Have them give us the correct info on why some deactivate in paddle mode and why some don't??? Oh yeah.... that might mean they would have to pay for people to get a tune from the dealer to get it corrected....

[Camaro Steve]

Originally Posted by babaron

I would like to be the first to point out (just in case no one else has beaten me to it) that AFM is NOT working according to its design. Specifically, it is supposed to engage only when cruising at a steady speed. But instead, it engages during gentle acceleration and this is what is MOST annoying about it. I know mine does. not at all anoying.

My hope is that GM realizes this fact and puts out a corrected ECM stock tune update that fixes it. (Jeff Morris are you reading this? PLEASE)

This is exactally what mine does.
I've had the car less than two weeks now and if I had known just what this AFM was going to be like I would not have bought the car. Durring the test drive I was "encouraged" to accellerate alot, and never really noticed it. Now that is all I feel, it is engaging almost constantly. I paid for a V8 engine but what I have is a V4!!! I want the rest of my engine!!
There is no valid reason for this not to be as sellectable as traction/stabillity control!!

[572HP]

I test drove a Silverado yesterday that has a 5.3L V8 with AFM, and it is very difficult to detect. In my mind, the afm on the camaro is defective.

[5thGenIndy500]

Originally Posted by babaron

I would like to be the first to point out (just in case no one else has beaten me to it) that AFM is NOT working according to its design. Specifically, it is supposed to engage only when cruising at a steady speed. But instead, it engages during gentle acceleration and this is what is MOST annoying about it. I know mine does. My wife drives a Honda Odyssey which has the same technology (Variable Cylinder Mgt.) and it engages ONLY when criusing at a steady speed, not at all anoying.
PLEASE)

This is the problem I am having with mine as well. I had a 2010 that worked as it was designed and I hardly noticed it. My 2011 engages all the time even in Sport mode.

Originally Posted by 572HP

I test drove a Silverado yesterday that has a 5.3L V8 with AFM, and it is very difficult to detect. In my mind, the afm on the camaro is defective.

I have a 2008 Tahoe which I have driven 115,000 miles; it has AFM and has worked flawlessly. AFM in the Tahoe it is awesome as it saves fuel.

[Brolik10]

My Charger worked without notice as well.. I wasn't even aware that it had AFM until I changed the exhaust. LoL

[castonguayh]

I have taken some advice from this forum and contacted the service manager of the dealership. No response yet.

a side note, one of the salesmen who is a camaro corvette junky gave me some advice. It didn't work for me but may help someone else.

the computer sets itself on the first tank of gas. SSooooo, if it was filled with regular (or visa versa) and then you change the gas you use it will affect the way the car runs. The cure was to pull 2 specific fuses and let it sit overnight. The computer will reset itself to the gas that is in the tank at that time.

1 catch, you have to make sure the tank has only the type of gas that you will run all the time. You need to run on that octane for a few tanks before you do this.

Again, it made no difference in my car, but it might help someone else.


PS. I bought the car to cruise on country roads 30-40 mph. that is when the "Moan" (as they are so fond of calling it) is MOST evident. I still love the car but will trade it in as soon as I have put on enough mile to make the financial loss bearable.

I'm think new Z28..........

[TRIPWIRE]

I got a tune recently and I getter better gas mileage than when active fuel management was on........active fuel management is retarded shouldn't be in a car with 400 horsepower

[SteveTaylor]

My car is also very sluggish from a start with low rpms..
I have to be very heavy footed & really depress the gas to get moving..
After about 1/2 throttle, its picks up noticeably..

My other car, a Honda Accord has AFM called VVT, (drops to 4 cylinders) and you NEVER feel it, I see the green letters ECO (economy mode) light up, but I never hear it or feel ANY difference in performance..

On the Camaro at low rpms, NOT WHILE CURSING, is when this kicks in..

I got it tuned out, and there is a world of difference.
Nothing else, just DOD/AFM turned off..

I recommend everyone get this done.

[dannykay]

Any update on this issue from anyone who took their cars in? I just recently noticed this happening to my vehicle and took it into the shop. I went on a test drive with the tech and he said he has to order some part for the tranny??

[castonguayh]

I gave up my warantee and had the car custom tuned. YOU CAN'T BELIEVE THE DIFFERENCE IT MADE. I gain about 15 HP at the rear wheels. By the way, I learned that current horsepower is rated at the engine, not the rear wheels. HUGE DIFFERENCE. the automatic camaro only puts out about 300-310 to the rear wheels. Think that's bad? be glad you didn't buy the corvette!!

I will not buy another chevy. no one would buy this car if they knew that it was going to perform the way it does. It was only done to loose the gas guzzler tax. Chevy clearly put selling cars above the satisfaction of the people who buy them.

[ToolFan66]

I have had my 2SS/RS auto for 15 months and I have no problems moving my car from slow to fast, when I punch it I'm gone!! The only thing I agree with is I wish the paddles were on the shifter..

In 20 months it's payed off and about that time the warranty will be done then I will mod like crazy!!